What else can you even use for mobile phones? I hate Apple, so only option left is Android. The rest of proprietary OS are just plain useless. There is nothing else there. You can literally only sack the permissions and block Google apps from connecting. Some have to, but not all. If you can sack some communication, that's better than nothing.
EDIT:
Just checked and Android phone still works even when you remove all permissions from even essential Google apps. I've also removed nearly all permissions from Xiaomi apps, even "essential" ones and everything seems to work just fine. Which kinda shows how many unnecessary permissions we give to everything (or is given by default) for no good reason.