iOS also changes the keyboard layout depending on usage. So when you're in a browser like safari or Chrome and you tap the address bar which these days is 99% used as a search bar with no particular need for a prominent '.' you get a prominent '.' for no good reason.
A huge '.' right next to the space that's not even correctly recognizing the touch area in a context where you actually likely type '.' less often than any other form of writing. You cannot change this behavior.
Fwiw i made a mistake of switching to iOS from Android due to a lot of peer pressure. "iOS is better, you should switch" the wife said. Well I've switched. Now i have a terrible keyboard, i don't have any call screening and non existing text spam filtering. I'm yet to see any improvements.