FB messenger chat heads

Was thinking of switching from Android to iPhone 14 pro max. Friends have said they cannot get FB chat heads on iOS. I know that the iOS set up of things can be different as I use an iPad Air but am not able to get some of my apps to work the same on iPhone. I called support but they don’t use Android devices so didn’t even know what I was talking about.

Has anyone been able to get chat heads on a 14 Pro max or should I stick with Android?