I'm constantly touching things at the edge of the screen and leaving pages. Is there anyway to stop this? I had no issues on the much larger curves of the S8+

This is starting to drive me crazy. I just wrote a Reddit comment three times because I kept changing to another page, and have exited the keyboard three times during this very post due to tapping outside the keyboard.

For some reason I have loads of fat, muscle, and skin between my thumbs and pointing finger, as well as that bit at the bottom of your fingers on your palm. Despite not being overweight. Weirdly enough I had minimal problems with the S8+ so assumed this phone would be fine, but it's not and it's driving me crazy.