ASP.NET application not accessible through Apache proxy on Linux

I need to clarify the process of pointing a web domain to a running ASP.NET application on a raspberry pi. The application is developed and ready, and the website is up and running. I have researched multiple posts and can't find anything wrong with my proxy redirect.

1. Is dotnet blocking the recieved redirect in someway by locking out any external visitors from the application?
2. Since there are multiple ways of setting up such an environment. Do I need to configure both an XForwarding in my application as well as a ProxyPass in Apache?
3. I have an SSL via Letsencrypt, protecting the traffic on my website. This worked fine when running a simple HTML/CSS layout. Do I need to acquire a certificate for my application aswell?

Overall the setup is not working, and I'm itching to understand why. Most threads seem to imply its as simple as running the app on port x -> pointing to port x -> success. For me this isn't working...

Through wget I successfully reach my website via both ports (since I redirect HTTP to HTTPS). By entering the localhost:port into browser I can find the application. Why is my proxy not working?

HTTP Response from website

http://localhost:7199

Apache2 Virtual host

<VirtualHost *:80>
        ServerName www.website.com
        RedirectPermanent / https://www.website.com
</VirtualHost>

<IfModule mod_ssl.c>
<VirtualHost *:443>
        ServerAdmin webmaster@localhost
        ServerName www.website.com
        ServerAlias www.website.com

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

        ProxyRequests Off
        ProxyPreserveHost On
        ProxyPass / http://localhost:7199/
        ProxyPassReverse / http://localhost:7199/


        SSLEngine On
        SSLCertificateFile /etc/letsencrypt/live/www.website.com/cert.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/www.website.com/privkey.pem
        Include /etc/letsencrypt/options-ssl-apache.conf
        SSLCertificateChainFile /etc/letsencrypt/live/www.website.com/chain.pem
</VirtualHost>
</IfModule>

All and any thoughts are very appreciated. Thanks for reading!