So there is now simply a black area where the notch is? Yeah, that's what I was hoping for. It's an easy fix, I don't need to re-design the whole game.
I didn't change Viewport Fit and Fullscreen mode. What I did was removing construct-mobile-notchfix plugin from the export. Export to Cordova, remove plugin from the config.json and config.xml, then zip and build an apk with C3.
Thank you so much for your help!