Well, you can block ads on iphone (Uyou+) and on android (YouTube morphe)

I wish that I could switch to it but my main phone doesn’t have build for any Linux distro. And I would have to make one myself

There are 2 OpenMW builds for phone, one from cavebros and another from Sisah2. You have to go to actions and then download artifact. In order to do that you need github/gitlab account