When I first returned to Linux several years ago I started with Ubuntu, since it was the only distro I had used. I got confused when I installed Firefox and other apps via apt but instead got snap versions. This (very miniscule) gripe is enough of a reason for me to not recommend Ubuntu to new users anymore.
I also couldn’t find it when I just scoured the app’s settings on my phone. I haven’t setup the “My selfie” feature though so that may be why