Hello , sorry about your problems. My name is Marco and I will do my best to help you.
Do you have Powertoys software installed on your PC?
If yes, check this:
Open PowerToys.
Select Quick Accent.
Turn it off.
Otherwise you can try this: click the Start menu.
Launch “Settings”.
Click “Ease of Access”.
Select “Keyboard” from the left side.
Click the toggle next to “Use Sticky Keys” to disable this feature.