Off the top of my head:
- Change your DNS resolver to something you trust
- Use a paid VPN service (bonus points if it disables your internet when it's not connected to the VPN)
- Enable erasing data after several failed password attempts
- Disable notification previews on the lockscreen / when locked
- Disable Siri, control center, widgets, etc. on the lockscreen / when locked
- Disable Touch/Face ID when entering a risky location (airport, etc.)
- Disable location services, camera, microphone, etc. for every app you can
- Disable sending analytics to Apple and app developers
- Use a privacy conscious search engine (DuckDuckGo, StartPage)
- Install a good content blocker (1Blocker)
- Don't use apps like Facebook that violate your privacy
That's all I can think of for now.
- Change your DNS resolver to something you trust
- Use a paid VPN service (bonus points if it disables your internet when it's not connected to the VPN)
- Enable erasing data after several failed password attempts
- Disable notification previews on the lockscreen / when locked
- Disable Siri, control center, widgets, etc. on the lockscreen / when locked
- Disable Touch/Face ID when entering a risky location (airport, etc.)
- Disable location services, camera, microphone, etc. for every app you can
- Disable sending analytics to Apple and app developers
- Use a privacy conscious search engine (DuckDuckGo, StartPage)
- Install a good content blocker (1Blocker)
- Don't use apps like Facebook that violate your privacy
That's all I can think of for now.