While you do get a lot more control on Android than on iOS, you still can’t do much without resorting to an alternative OS like GrapheneOS.
You should do the basics:
Delete the advertising ID.
Delete or disable apps that you don’t need.
Replace the browser, I would recommend Brave on the stock OS.
Use a VPN that has DNS-based content filtering, or if you aren’t using a VPN, then pick a good DoT provider.
Disable Bluetooth and Wi-Fi scanning.
Opt-out of usage & diagnostics.