FreeTube is a good replacement for YouTube on PC and NewPipe is good on Android phones.

I use F-Droid and Aurora Store on my phone and replaced the Google apps, that came preloaded on the phone, with FOSS apps. NewPipe on my phone and FreeTube on my PC to replace YouTube. I don’t use Gmail. My Google account is on a Proton account. After I am sure I have all my desired apps switched over to email sign in, I will delete the Google account. I am also switching my Proton mail for Tuta mail. Proton is on the wrong side. I also dumped Microsoft over a year ago. I have been on Linux since then. I have avoided FaceBook for over a decade and never maintained a Twitter account.

Install Linux on them and give them to school children so they can go to school online and not have to worry about being shot. I also see a lot of lithium in that pile.