Turn off Siri, to protect your privacy
How to deactivate / turn off “Hey Siri”, the Siri assistant, to reclaim privacy and make sure you’re not bugged all the time by Apple
Apple
10 best free privacy apps to protect personal data on iPhone (2021)
10 best really free privacy applications for iPhone to secure, protect and encrypt your personal data
Apple iCloud+ VPN (at no extra charge)
iCloud+, the Apple Cloud that includes VPN and disposable email, reserved for paid plans without price increase.