I keep messing up with adulting I feel like a loser?

I am taking care of my grandma and I feel like it is really taking a toll on me. Like it's making me stupid. I went too slow using apple pay. And got audible groans from people in line.

Mistakes I made. Another store I keep messing up with self checkout. I bought a little lettuce that had been ripped up Apparently a lady told me I shouldn't be ripping lettuce and I can be arrested or banned from the store for life. it was ripped up. It had a scan tag on it. I lost my card at the store. Or my grandma threw it out and Doesn't remember. I cancelled it. It was kind of messed up. The credit card company yelled at me because I shouldn't be replacing them. So much. I explained the situation with my grandma and that they keep breaking and she said I am lucky I am getting another one.

I almost walked into someone. There was like no where to walk. I apologized. the other day I had a guy with a giant American flag following me honking his horn screaming in the car screaming. I don't know what I did wrong. a security guard actually asked me if everything was ok because that looked messed up.

Updates
8 mo
I paid for the lettuce. I am now worried I am in trouble. And be accused of stealing when I paid for it.
I keep messing up with adulting I feel like a loser?
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