I went with an onn4k not logged into a google account because I got one that was patched to keep you from replacing the os with lineage but if you get the right version you can change it to lineage and put the apks for any services you want onto it
I like cloudstream personally and jellyfin is also pretty good
I used kde connect to load the apps onto it by downloading f-droid and loading apk files that way
I would independently send money to the people who make the content and just pirate it honestly because then you support the creator and also get to control your content as much as you want