Conclusion:
Cross-Platform mobile development sucks.
I will spend more tie but deliver more elegant app

airbnb has the same problem so they had the idea of using a subset of react for which they use as the core for their codebase for all plattforms.

so their website, their apps, heck even their VR prototypes shares the same react codebase.

https://youtu.be/8qCociUB6aQ

I didn't want java, so I went for Xamarin. Only reason.