You should definitely give react-native-web a look. I've had a good experience with it and the only issue is animation. I don't know how any UI animation lib can match the performance of hardware accelerated CSS transitions btw. As soon as you have to run user code on every frame things go south.

Of course I'd love to be proven wrong and shown what animation optimizations I missed in my code.

I haven't heard of Capacitor yet, but I've used Cordova in the past. Is it a big improvement?