Don't iPhones do that annoying thing where it shows your image flipped the wrong way when you use the selfie camera? Selfie cameras should always behave like a mirror, in my opinion. It's how humans are used to seeing themselves.
I forget if that's the default or not, but if it is you can disable it. You ideally wouldn't use the selfie camera, though; the rear camera has a bigger sensor and a better lens.
Zoom and I think Teams and OBS have a setting to flip the video input.
There's an option to flip the image, you can have it either way.