My boss has made requests which to me seemed unreasonable and drove me to develop severe anxiety. I do not know if a) that's normal and b) how do I stop shutting off, obeying them and being compliant?

Some of the things my boss has done recently:

- spotting an irrelevant mistake in my powerpoint (while they would make 5 in one slide) (and bear in mind I make 20 powerpoints/week) and using that as proof in our minutes that I am not attentive, do not proofread my work and shows gaps in my knowledge; similarly, not being able to print things as the printer was broken (they told me to come 2h before work starts like them so I could print things) and using that as proof for my lack of time management skills

- making me do things for them that they find daunting or that they do not want to do (e.g., working an extra hour at 6pm every Monday - something that could have been done by them or split between us); when i said i can't do something as i don't have the time, i was told to stop being lazy and work more so i don't have to do the work after working hours

Is this commonplace? I recently went to an interview and the boss was giving me similar vibes, which made me think maybe it's like this everywhere?

If such behaviour isn't normal, how can I stop shutting down (cause of my anxiety) and stop being compliant to such unreasonable demands? I really fear confrontations!!!