Minecraft is resetting?

I have a problem and Minecraft has been resetting me several times for 1 week but I didn't do anything. And then I always have to adjust my settings again and this time I can no longer sprint. Does it happen to you too and do you have a solution and do you know how I can sprint again?

If the Sprint key is set correctly in the settings, then it's not Minecraft, but the keyboard or Windows. Restart your PC and see if you can sprint again.

That the settings always reset is strange. Do you have any mods installed or does someone else have access to your PC? If not, your PC may have a virus. Download the https://de.malwarebytes.com/...dwcleaner/ and start the scan.

Everything didn't work out but I managed optifine was to blame xD