Do you have only one language installed, but your keyboard layout keeps switching from QWERTY to AZERTY? This is usually due to the shortcut still being active in the background.

If your keys are producing the wrong letters (e.g., " comes out as @ ), you have the wrong installed (e.g., US vs. UK English).

Now, the only way to change your language will be Win + Spacebar (which is much harder to press accidentally).

The classic Alt + Shift combination also works for many users to swap between input methods.