@Rediikid You can use Freetube for Youtube subscriptions and watch videos with it. Its foss, and doesn't need any of your info. For Android there is NewPipe from F-Droid, you can also use it for subscriptions and watching videos, no need for any of your private data, also works with your screen off. Links:
Freetube: https://github.com/FreeTubeApp/FreeTube

NewPipe: https://f-droid.org/en/packages/org.schabi.newpipe/