Long s in pdfLaTex - latex

Question

I am trying to mock an antique writing style in LaTex (standard Overleaf with pdfLaTex) and I need to include the old "long s" letter (https://en.wikipedia.org/wiki/Long_s). Using the ſ symbol produces the LaTeX Error: Unicode character ſ (U+017F) error.
Here's a minimal example with my actual header, thank you for any suggestion:
\documentclass[a4paper,11pt,twoside,titlepage]{report}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[labelfont=bf]{caption}
\usepackage{subcaption}
\usepackage[sorting=none]{biblatex}
\usepackage{booktabs}
\usepackage[english]{babel}
\usepackage{csquotes}
\usepackage[T1]{fontenc}
\usepackage{geometry}
\usepackage{hyperref}
\usepackage{cleveref}
\usepackage{enumitem}
\usepackage{epigraph}
\usepackage{subfiles}
\begin{document}
Here is a ſimple example
\end{document}

Answer 1

The easiest way to use unicode characters in latex is to switch to an unicode aware engine such as lualatex or xelatex. In overleaf, you can switch to them in the sidebar of your project.
If you use one of these engines, you should remove the fontenc package.
% !TeX TS-program = lualatex
\documentclass[a4paper,11pt,twoside,titlepage]{report}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[labelfont=bf]{caption}
\usepackage{subcaption}
\usepackage[sorting=none]{biblatex}
\usepackage{booktabs}
\usepackage[english]{babel}
\usepackage{csquotes}
%\usepackage[T1]{fontenc}
\usepackage{geometry}
\usepackage{hyperref}
\usepackage{cleveref}
\usepackage{enumitem}
\usepackage{epigraph}
\usepackage{subfiles}
\begin{document}
Here is a ſimple example
\end{document}