Am I being paranoid about how toxic this is?

Anonymous
I’ve been feeling really burned out at this job. I am in college snd im trying to wait until I graduate and can find something better. It’s a retail job but it honestly feels so fast paced snd there’s a huge sale like everyday with an overflow of customers which is extremely overwhelming to me.
I am not that extroverted at all and I signed up to be a cashier and sometimes I’ll be doing inventory that I’m not supposed to be doing.
There’s this one manager who I used to be close to but now I think she’s starting to dislike me. She’s like 6 years older than me and she makes the schedule and knows I’m in college. I can only work certain hours and she scheduled me outside of the time I was available. I got to work late because of class and I politely asked her if she could update my availability ( again ) and she said she didn’t make the schedule, which she obviously did because her names on the posting.
Also there’s this one supervisor who that manager doesn’t like and constantly talks behind her back. Yesterday it was her last day and the manager scheduled only me and the supervisor to close the whole store by ourselves and she has to count the money so I was basically replenishing and doing trash by ourselves and on top of that she and some others left 3 carts of inventory that had been sitting there all day so someone else could have done it but they chose to leave it for us.
Also that manager gives me rlly long shifts
Like I was scheduled for 8 hours today when everyone else had like 6 or fewer and that honestly sounds very personal.
Am I being mistreated?
Am I being paranoid about how toxic this is?
5 Opinion