I got a Android tablet...I can't recommend it. YT has gotten pretty toxic with the dark patterns. There are the usual interstitial ads, but after you skip and go full screen there's another ad widget in the lower left of the video. You have carefully navigate a popup menu to dismiss it without triggering an ad popup. If you pause or double-tap to -10s the video it restores down and shows an ad on the right side.

The Edge browser for has the best ad-free experience I've found so far on Android. It supports Widevine (DRM videos) and performance is good enough for most videos. I do get an occasional stutter with higher res videos. Firefox supports Widevine, but it didn't last week? Or I just didn't get the popup to "Enable DRM" for some reason. Edge claims to have blocked 15k YT ads in the last week with the built-in AdBlock Plus. It works with uBlock Origin as well (this week anyway).

Firefox works fine on Android, and supports ublock origin and playing youtube in a background tab/with screen off. Couldn't speak to DRM as I've never used it on any platform.