Good morning Sokol1707!
I see you have a concern with the stopwatch starting on its own. I'll be happy to help out.
Are you able to tap Stop on the stopwatch? If not, or if this has happened more than once, try closing the Clock app, then restarting to see if it happens again:
- How to force an app to close on your iPhone, iPad, or iPod touch
- Restart your iPhone, iPad, or iPod touch
Updating may also help: Update your iPhone, iPad, or iPod touch
Let us know how that works out for you.
Cheers!