Greasy Fork is available in English.
Add a simple loop/unloop button to the navbar for Youtube Mobile. Made in about 15 minutes as a teaching tutorial.
< Отзив за Youtube Mobile Looper
You're welcome buddy. If you're using the Kiwi browser I also suggest this extension here that let's you play videos in the background so you can listen to music with your browser tabbed out or phone closed.
https://github.com/kiwibrowser/android/issues/60
And of course Ublock Origin to block adds. Enjoy :D
It's working. Thank You♡