How to make Iphone more private?

MacOS Sequoia broke network extensions. See LuLu causing protocol errors in MacOS Sequoia? · Issue #630 · objective-see/LuLu · GitHub, Apple's new macOS Sequoia update is breaking some cybersecurity tools | TechCrunch, macOS sometimes leaks traffic after system updates | Mullvad VPN. Perhaps related?
DNS configuration based filtering should not be affected