Hi, @userAEy3GnkRhO I can help you solve that you are having on your phone. I would suggest turning off the "Predictive text" feature on your device, please follow the steps below:
Go to Settings>General>Language input>On screen keyboard>Samsung keyboard>Smart typing>Predictive text
(Turn off predictive text)
If you are using Google keyboard:
Go to Settings>General>Language input>On screen keyboard>Gboard>Smart typing>Auto Correction
(Turn off Auto-correction)
Please let me know if you have any questions, Thank you!