Obtanium is an app where you enter webpage links to github repositories. Its easy. Its just simple copy and paste. Then it downloads and installs it for you while constantly checking for new versions just like an app store. Its great for apps not on F-Droid.

You have to activate the plugins. Its nuts and really needs simplifying. Go into settings, plug ins and set your default meta source to Spotify and default audio source to youtube. It pulls all of it’s data to and from Spotify while pulling the audio from yt music. You have to make a generic Spotify account. Once it works its worth it. You do not have to sign in for yt music. Also in settings you can set it to pull from newpipe instead of yt directly. You can also set your audio quality in settings. Once that works you can try he dab HQ plugin. I haven’t gotten that to work yet but sent in an issue request.