Should we use flutter or React Native?

We are a team of 2 founders. Our app can be compared to instagram in terms of complexity, with images, social components and infinite scrolling.

We are very undecided between using something like Flutter or RN. Flutter would be our preferred choice although we can't find many big app made all in flutter and the ones that are (Hamilton) are laggy.

Developing in native would not be optimal from a business perspective, given the market we would access by also having Android, and as a team of 2 it's hard to code for both platforms natively.

Any suggestions?

Thanks!