Funny enough, same here! I switched from the Samsung keyboard to gboard and I'm doing much better.
@LMK @Joeeye @siobhanw @WelshPaul
simply switch off predictive text and auto replace
settings → general management → language and input → on screen keyboard → Samsung keyboard → smart typing
@strawberry cake first thing I did when setting up the phone.
Hi all. If you're having a bit of trouble with the usability of the Samsung Keyboard then I recommend heading to Settings > General Management > Samsung Keyboard Settings > Style and Layout, and having a play around with options such as Mode, Size and Transparency, Layout and Font Size to see if you're able to find a setup that suits you better. I hope this helps.