React Native is not webview based, it's basically a translation layer that takes your JSX markup and turns it into SwiftUI / Kotlin UI code, native on each device.
Personally I like Flutter, a lot of people, even hardcore Android native devs, say Flutter could be the way to go for Android development in general [0].
[0] https://old.reddit.com/r/androiddev/comments/1np26m4/do_othe...
I liked Flutter 1.0, but then it broke my codebase with 2.0, and again with 3.0, which made me swear never to use it again.
The good ideas of Flutter, IMHO, got implemented in native Android (Kotlin + Compose).