13 hours babysitting with weak pay!

I babysit everyday 9 to 12 hours alll WEEK everyday except Sunday and I get paid weekly 150 only for those hours I could be working these long hours at a regular job right ? Am I stupid for doing this ? Or am I being so taking advantage of? I’m sitting here about to cry because I feel so taking advantage of and when I tell you I never sit down I’m running after the kid allllll day long he doesn’t listen he throws tantrums and hits me and try’s to break the tv he’s so bad and if I tell him no he screams bloody mercy I’ve never watched a kid this bad in my life and I’m getting bad pay for those long hours I do so much allll day long they don’t understand what I go through he’s almost 2 and acts like this it’s horrible I use to work in a child care and never had to watch a child that behaves like this I just want to cry I’m wasting time please tell me what to do