Step mum doesnt like me

I have a step mum who treats me like crap. She accuses me of stuff I dont do but never hears me out or tells me to shut up when I try to explain things, if I tell her to shut up or walk away then I'm the disrespectful one haha.

She expects me to always listen to her, well no thanks, after years of you never listening to me. She brings about the narrative that she is the more mature one, yet, behind my back tells my younger brother things like I dont work when that's not the full story (I was on furlough and returning to work next week)...many people in scotland were on furlough...or worse lost their jobs, plus I am also a student so ...yeah...I do plenty.

She also tries to find any reason to complain at me. One time she got annoyed because I didnt re-fold a kitchen towel I had used, even though when I used it I didnt unfold it and also we normally dont fold these as they are for drying our hands and wiping counters. Also one time she got mad, insulted me and kicked bins because these small bins I assumed were moved for a reason (because they normally are moved when people are in the garden) were still moved for a reason (e.g. if a family member was about to go in the garden) so I stepped over them instead of moving them.

Shes done a bunch of other stuff too, I just wish she would stop being so catty. I just dont speak up for myself anymore because I know she wont listen, but sometimes I just have a million things to say. Shes had this sort of personality since I was a kid, but it's been getting progressively worse.