Manager from hell ? What am I doing wrong???

So I recently started a new job and I loved it I’m getting paid 11$ an hour and it’s better pay than my previous job. The problem is a manager that I have has hated me since day 1, she gives me mean looks, whenever I ask a question she just makes it seem as though I’m dumb. I’m so comfortable with everyone else they’re super nice and supportive and whenever I have a question they answer it nicely. She embarrasss me in front of customers a lot and I always feel so bad. She always gets mad at me for every single thing I do she’s nice to everyone else but me !!! She always hates when I’m working with her because she makes someone else ask what time I’m clocking in and clocking out . What should I do ? Am I over reacting?