Bootstrap javascript needing to reload, or not functioning - ruby-on-rails

Question

Issue 1: My navbar toggle menu will not close, but will open, unless I remove either of the following from my layout:
<%= javascript_include_tag 'application', 'data-turbolinks-track': 'reload' %>
Now, when i remove this the toggle works and will open and close. Although, my sign-in modal will not function without it.
or:
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
Issue 2:
I have accordions that will not work on first load - but will then work once the page has been reloaded.
My navbar in summary:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="/">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
<span class="navbar-toggler-icon"></span>
</button>
</div>
<div class="collapse navbar-collapse" id="collapsibleNavbar">
<ul class="nav navbar-nav navbar-right">
#more nav items code here
<li class="nav-item-2 nav-display-2">
<button type="button" class="btn ripple-effect btn-info btn-lg" id="myBtnSignIn2">Sign Up/Login</button>
<div class="modal fade" id="SignInModal2" role="dialog">
<div class="modal-dialog modal-dialog-centered" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<%= render "devise/shared/links" %>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
</li>
</div>
</div>
</nav>
<script>
$(document).ready(function(){
$("#myBtnSignIn").click(function(){
$("#SignInModal").modal();
});
});
</script>
accordion code:
<a class="collapsed card-link text-center" id="edit-accordion" data-toggle="collapse" href="#collapseFIRST">
</a>
<div id="collapseFIRST" class="collapse" data-parent="#accordion">
<div class="card-body">
</div>
</div>
application.js:
//= require rails-ujs
//= require activestorage
//= require turbolinks
//= require_tree .
//= require jquery3
//= require popper
//= require bootstrap-sprockets
//= require jquery
//= require Chart.bundle
//= require chartkick
Is there any you see standing out in my code wrong?

Answer 1

You can try this in your script. It is explained here
$( document ).on('turbolinks:load', function() {
$("#myBtnSignIn").click(function(){
$("#SignInModal").modal();
});
});

Answer 2

Add the bootstrap gem to your Gemfile and remove the html tag from the layout
Gemifle
gem 'bootstrap', '~> 4.3.1'
You should not have 2 versions of jQuery.
Then run bundle install
Then change this to:
/= require rails-ujs
//= require activestorage
//= require jquery3
//= require jquery_ujs
//= require popper
//= require bootstrap
//= require Chart.bundle
//= require chartkick
//= require turbolinks
//= require_tree .
Also in hour applications.scss you should have
#import "bootstrap";
Also in layout try instead:
<%= javascript_include_tag 'application', 'data-turbolinks-track': true %>