How add paragraph in Latex file - latex

Question

I want to add a paragraph section to the Summary section in this Latex template.
I've tried using \paragraph, but I am not able to get the results I want. I'm very new to Latex so my understanding of \newcommand is a little confusing to me.
Here is the template src:
\documentclass[letterpaper,11pt]{article}
\usepackage{latexsym}
\usepackage[empty]{fullpage}
\usepackage{titlesec}
\usepackage{marvosym}
\usepackage[usenames,dvipsnames]{color}
\usepackage{verbatim}
\usepackage{enumitem}
\usepackage[hidelinks]{hyperref}
\usepackage{fancyhdr}
\usepackage[english]{babel}
\usepackage{tabularx}
\input{glyphtounicode}
%----------FONT OPTIONS----------
% sans-serif
% \usepackage[sfdefault]{FiraSans}
% \usepackage[sfdefault]{roboto}
% \usepackage[sfdefault]{noto-sans}
% \usepackage[default]{sourcesanspro}
% serif
% \usepackage{CormorantGaramond}
% \usepackage{charter}
\pagestyle{fancy}
\fancyhf{} % clear all header and footer fields
\fancyfoot{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
% Adjust margins
\addtolength{\oddsidemargin}{-0.5in}
\addtolength{\evensidemargin}{-0.5in}
\addtolength{\textwidth}{1in}
\addtolength{\topmargin}{-.5in}
\addtolength{\textheight}{1.0in}
\urlstyle{same}
\raggedbottom
\raggedright
\setlength{\tabcolsep}{0in}
% Sections formatting
\titleformat{\section}{
\vspace{-4pt}\scshape\raggedright\large
}{}{0em}{}[\color{black}\titlerule \vspace{-5pt}]
% Ensure that generate pdf is machine readable/ATS parsable
\pdfgentounicode=1
%-------------------------
% Custom commands
\newcommand{\resumeItem}[1]{
\item\small{
{#1 \vspace{-2pt}}
}
}
\newcommand{\resumeSubheading}[4]{
\vspace{-2pt}\item
\begin{tabular*}{0.97\textwidth}[t]{l#{\extracolsep{\fill}}r}
\textbf{#1} & #2 \\
\textit{\small#3} & \textit{\small #4} \\
\end{tabular*}\vspace{-7pt}
}
\newcommand{\resumeSubSubheading}[2]{
\item
\begin{tabular*}{0.97\textwidth}{l#{\extracolsep{\fill}}r}
\textit{\small#1} & \textit{\small #2} \\
\end{tabular*}\vspace{-7pt}
}
\newcommand{\resumeProjectHeading}[2]{
\item
\begin{tabular*}{0.97\textwidth}{l#{\extracolsep{\fill}}r}
\small#1 & #2 \\
\end{tabular*}\vspace{-7pt}
}
\newcommand{\resumeSubItem}[1]{\resumeItem{#1}\vspace{-4pt}}
\renewcommand\labelitemii{$\vcenter{\hbox{\tiny$\bullet$}}$}
\newcommand{\resumeSubHeadingListStart}{\begin{itemize}[leftmargin=0.15in, label={}]}
\newcommand{\resumeSubHeadingListEnd}{\end{itemize}}
\newcommand{\resumeItemListStart}{\begin{itemize}}
\newcommand{\resumeItemListEnd}{\end{itemize}\vspace{-5pt}}
%-------------------------------------------
%%%%%% RESUME STARTS HERE %%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
%----------HEADING----------
% \begin{tabular*}{\textwidth}{l#{\extracolsep{\fill}}r}
% \textbf{\href{http://sourabhbajaj.com/}{\Large Sourabh Bajaj}} & Email : \ href{mailto:sourabh#sourabhbajaj.com}{sourabh#sourabhbajaj.com}\\
% \href{http://sourabhbajaj.com/}{http://www.sourabhbajaj.com} & Mobile : [phone] \\
% \end{tabular*}
\begin{center}
\textbf{\Huge \scshape Name} \\ \vspace{1pt}
\small 734-548-4835 $|$ \href{email}{\underline{email}} $|$
\href{}{\underline{linkedin}} $|$
\href{}{\underline{github}}
\end{center}
%-----------EDUCATION-----------
\section{Summary}
\resumeSubHeadingListStart
\resumeSubheading
\resumeSubheading
\resumeSubHeadingListEnd
%-----------EXPERIENCE-----------
\section{Experience}
\resumeSubHeadingListStart
\resumeSubheading
{Undergraduate Research Assistant}{June 2020 -- Present}
{Texas A\&M University}{College Station, TX}
\resumeItemListStart
\resumeItem{Developed a REST API using FastAPI and PostgreSQL to store data from learning management systems}
\resumeItem{Developed a full-stack web application using Flask, React, PostgreSQL and Docker to analyze GitHub data}
\resumeItem{Explored ways to visualize GitHub collaboration in a classroom setting}
\resumeItemListEnd
% -----------Multiple Positions Heading-----------
% \resumeSubSubheading
% {Software Engineer I}{Oct 2014 - Sep 2016}
% \resumeItemListStart
% \resumeItem{Apache Beam}
% {Apache Beam is a unified model for defining both batch and streaming data-parallel processing pipelines}
% \resumeItemListEnd
% \resumeSubHeadingListEnd
%-------------------------------------------
\resumeSubheading
{Information Technology Support Specialist}{Sep. 2018 -- Present}
{Southwestern University}{Georgetown, TX}
\resumeItemListStart
\resumeItem{Communicate with managers to set up campus computers used on campus}
\resumeItem{Assess and troubleshoot computer problems brought by students, faculty and staff}
\resumeItem{Maintain upkeep of computers, classroom equipment, and 200 printers across campus}
\resumeItemListEnd
\resumeSubheading
{Artificial Intelligence Research Assistant}{May 2019 -- July 2019}
{Southwestern University}{Georgetown, TX}
\resumeItemListStart
\resumeItem{Explored methods to generate video game dungeons based off of \emph{The Legend of Zelda}}
\resumeItem{Developed a game in Java to test the generated dungeons}
\resumeItem{Contributed 50K+ lines of code to an established codebase via Git}
\resumeItem{Conducted a human subject study to determine which video game dungeon generation technique is enjoyable}
\resumeItem{Wrote an 8-page paper and gave multiple presentations on-campus}
\resumeItem{Presented virtually to the World Conference on Computational Intelligence}
\resumeItemListEnd
\resumeSubHeadingListEnd
%-----------PROJECTS-----------
\section{Projects}
\resumeSubHeadingListStart
\resumeProjectHeading
{\textbf{Gitlytics} $|$ \emph{Python, Flask, React, PostgreSQL, Docker}}{June 2020 -- Present}
\resumeItemListStart
\resumeItem{Developed a full-stack web application using with Flask serving a REST API with React as the frontend}
\resumeItem{Implemented GitHub OAuth to get data from user’s repositories}
\resumeItem{Visualized GitHub data to show collaboration}
\resumeItem{Used Celery and Redis for asynchronous tasks}
\resumeItemListEnd
\resumeProjectHeading
{\textbf{Simple Paintball} $|$ \emph{Spigot API, Java, Maven, TravisCI, Git}}{May 2018 -- May 2020}
\resumeItemListStart
\resumeItem{Developed a Minecraft server plugin to entertain kids during free time for a previous job}
\resumeItem{Published plugin to websites gaining 2K+ downloads and an average 4.5/5-star review}
\resumeItem{Implemented continuous delivery using TravisCI to build the plugin upon new a release}
\resumeItem{Collaborated with Minecraft server administrators to suggest features and get feedback about the plugin}
\resumeItemListEnd
\resumeSubHeadingListEnd
%
%-----------PROGRAMMING SKILLS-----------
\section{Technical Skills}
\begin{itemize}[leftmargin=0.15in, label={}]
\small{\item{
\textbf{Languages}{: Java, Python, C/C++, SQL (Postgres), JavaScript, HTML/CSS, R} \\
\textbf{Frameworks}{: React, Node.js, Flask, JUnit, WordPress, Material-UI, FastAPI} \\
\textbf{Developer Tools}{: Git, Docker, TravisCI, Google Cloud Platform, VS Code, Visual Studio, PyCharm, IntelliJ, Eclipse} \\
\textbf{Libraries}{: pandas, NumPy, Matplotlib}
}}
\end{itemize}
%-------------------------------------------
\end{document}