How does one avoid Google (Android, Google TV, GMail, Google search, any web site that uses their analytics), Meta (Facebook, Instagram, any web site that uses their analytics)?
Honestly? You can't 100% avoid it. I don't use any phone apps that aren't specifically necessary, nor do I keep them on my device. I pay attention to the privacy guidance in the App Store but still don't entirely trust it because Apple, honestly, hasn't done the best job of ... protecting users from nefarious devs (be they individuals, corps, or nations). But iOS is better than the alternative in that respect, in my not so humble opinion.
I don't use any meta, alphabet, or social media app from anything but a Safari private browsing window. Do I have to login everytime? Yep, doesn't matter anymore though - I don't even know the password. That's what password managers, or passkeys, are for. I actually avoid both meta and alphabet unless there's a 3rd party requirement or there's a post I need to see for one reason or another. I don't browse FB, use insta, etc.
All you can do IMHO is mitigate. I don't take it to excess, but I don't give them anything I don't have to or that I don't get something of necessity from.
Your mileage, needs, and risk acceptance, may vary.