You don’t have to use Google Play for apps on your Android phone.
There’s a free open alternative app store called F-Droid, which is much more privacy-friendly, and which you can install yourself relatively easily.
There’s a simple instruction guide for beginners on switching.social:https://switching.social/ethical-alternatives-to-google-play/
There’s a much more detailed guide by @IzzyOnDroid
You can follow the official F-Droid account on the ActivityPub Fediverse: