I recommend against the Nexus 7. We used it for some 10 years, mostly with Lineage OS, as a video player for our kids.

We had two, and both batteries are dead. No longer charging at all.

Additionally, even before the batteries went, video playback was far from great at the end.

I used NewPipe for youtube videos and VLC for downloads. And while once playing, it worked fine enough, the UI interactions were frustrating because of lacking responsiveness, and the 7 inch thick bezelled form factor made it hard to watch anything without holding the device in front of you.

We've since switched to a couple of cheap 10" tablets and they provide a much nicer experience.