I hate taking care of my siblings

I’ve never liked kids and don’t plan on having any of my own. I do get paid to watch them so I really shouldn’t be complaining, but she’s struggling with money and doesn’t pay me half the time, which I get. I have to get up at 7 to walk them to the bus then pick them back up at 3 and watch them for 2-3 hours a day. They never listen when it’s just me because my mom spoiled them terribly when they were younger and only listen to my dad, who we haven’t seen in 2 months. They yell, fight, make messes, and one of them chases my cat because he thinks it’s funny. Everything they do is messy and they’re old enough to help clean but my mom never makes them because she thinks they’re incapable of any labor or too tired to make them do it when they say no. Because she’s so tired all the time, nobody cleans and I have to clean the entire house just for it to get messy again the next day. They leave food and small things on the floor and tables which I have to clean because it’s a choking hazard to my cat that tries to eat everything. I’ve asked them to clean their plates and be careful multiple times, but they don’t care. He’s the only thing bringing me any joy right now. I have to cook dinner sometimes to and most nights are fend for yourself (about 50/50 though because she does cook). It feels very overwhelming sometimes. It’s also ruining my confidence as a guy because this feels like such a feminine role, I’m a guy, not their mom.