You should check out Vanced / ReVanced. Vanced is basically a modified Youtube app with ads removed and a lot of the other annoyances fixed. It's gotten trickier to find since google sent them a nastygram, but they posted the SHA256 on
https://vancedapp.com/ so if you find a copy floating around, you can quickly determine if it's legit or not.
ReVanced is a WIP set of tools to patch Youtube and other apps - https://github.com/revanced
Vanced and Iceraven (Firefox with more addons enabled) are two of the main things keeping me on Android.