And if you want to install whichever apps you want, AND not be spied on by your OS, there are basically no options.
Linageos is a possibility, but with the play services situation, running any mainstream app without phoning home to google is if not impossible, extremely difficult and filled with footguns.
Pine and Librem are exciting emerging possibilities but they have only been available for a very short time so it remains to be seen what will happen there.
If you don't like Apple's walled garden then use Android.