Need to know your opinion.

OK so long story short I used to manage at my job I am right now and it became too toxic for me so I dropped down to basically a regular team member I still get paid the same and I still do a little bit of the duties but I’m not really responsible for anything so after I dropped off from my position they still had me opening the restaurant by myself and I was confused as to why I was opening the restaurant whenever I wasn’t supposed to be in charge and doing management stuff anymore but whatever fast forward so they always change the rules like it’s never consistent.

So basically what happened was I didn’t do one of the morning task when I opened one morning because I was trying to set up the whole restaurant and I only have just myself until about 45 minutes later and I’m sitting here trying to set up a whole entire store by myself make sure everyone’s coming in setting up all the equipment basically doing everything and it’s kind of impossible sometimes depending on how bad the store was left at night and if they stocked up or not well one of the managers snitched on me to the other manager that makes the schedule and basically told her that He didn’t want me to open the store anymore by myself which was OK because I’m not a manager anymore but he never told me that they were changing my hours because of that one situation where I forgot to count the safe in the morning because like I said I’m by myself trying to do all the stuff that the night crew didn’t do and so recently I had Covid and I came back last week and I was just wondering like why my hours went from like 45 tip 35 which 10 hours is a big difference was almost like a shift and a half for me.. so anyways I confronted him and I was like hey like do you know why I don’t open any more in whatever whatever and he basically admitted to him telling me to not open so that cut my hours back but the thing that made me upset was I wasn’t even given a notice or anything it was like a set up because he doesn’t like me and neither does the other manager and so I just was more upset at the fact that no one sat down with me and told me what I wasn’t doing right instead they just cut my hours back in so when I confronted him about it he got really defensive they were saying like he admitted to doing it but whatever he says it’s going to go in that’s not gonna change his mind so I texted the other lady that makes my schedule and I was just like asking her about the situation because I want to hear two sides and she literally screenshot it what I said and sent it to him and she knew what she did when she did that it wasn’t anything bad it was just basically me saying like I don’t think it’s fair for you to cut my hours over something that’s very minor and obviously I’m not perfect but you can’t have favoritism and only do that to me and the other managers and so now I know when I go to work tomorrow it’s going to be very uncomfortable at the fact that she screenshot of what I sent and sent it to him trying to start an argument and at the end of the day I’m the bad one and I’m trying to keep back my cool but this is to a point where it’s my last straw and I’m literally about to go off on someone and just quit because it’s too toxic for me and messing around with peoples hours and schedule is not cool. How would you handle the situation?