i went with social.linux.pizza . it has around 12k user. It has 2048 word limit. Manually blocked 600+ nsfw accounts. Now I'm happy with it.
On adb use pm uninstall than package name. there is something called universal android debloter. Also you can use shizuku with canta to remove it.
Telegram is not end to end encrypted. Repeating it's not. Only private mode or something like that is.
First one is also my problem. I hate Facebook but for my college I have a account(totally nothing in it). It sucks.
Unfortunately I have never seen one. I tried to create a burner account with tuta mail by they want my photo or gov id for verification.
Never used reddit