@defelilo: I'm sorry to hear that you're having some issues with the Samsung Keyboard. Based on what you've described, please can you try heading to Settings > General Management > Samsung Keyboard Settings > Switch off Predictive Text (which will also disable Auto Replace), and make sure that Auto Spell Check is toggled on. This should prevent the wrong words being automatically populated, while still highlighting mispelled words, and suggesting corrections.
Well... ther isn't working spellcheck in Samsung 2022 models if you are multilagnuage.... and thre isn't any spellcheck if you use physical keyboard. [And Nokia 6110 is out of stock.]