Honestly amazing how well NewPipe works on the Librem 5 running via "Android Translation Layer". I had to turn down the resolution from the default 720p60fps to 240p for it to play videos reliably (didn't test anything between those) and the UI looks scuffed with various missing icons and such, but crucially it plays videos back more reliably than any other YouTube app I've tried on #postmarketOS! On #Flathub if you want to try it yourself: https://flathub.org/apps/net.newpipe.NewPipe
Don't say you've used a Linux phone if you haven't 100%'d Animatch (it only took me like two years) image
If you use #pmbootstrap when working with #postmarketOS, I'd welcome any testing results for migrating your work directory with . Just checkout the branch and try to run $ pmbootstrap init and it'll prompt you for whether to migrate. Even successful test results are nice to see as they build confidence in that it works properly!