Bad mother??

Hey guys I just want to take this off my chest. I’m a stay at home mom and i Love it most of the time .My daughters are 5 and 2 years old. I love them to pieces but lately it’s been very difficult.. they just push my buttons all day. my oldest has days where she wakes up and goes to bed pissing me off.. she complains about everything about her breakfast about the clothes she wears , her shoes ,the cartoons , the songs that play in car, what park we go to , and that she doesn’t want to do this and that and she doesn’t want to eat the food I prepared , all while my 2 year old runs around screaming most of the time. I’m at a braking point. I feel like the crappiest mother ever . 😢 I do the best I can everyday and I feel like it’s never enough.. it’s like I could break myself to pieces and it still wouldn’t be enough.. i feel like I never have enough time to give them proper attention and then they just throw fits all day I don’t know.. but they are terrible right now.. they fight over everything and anything.. and I lost it sometimes .. I hear myself yelling at them and then I feel so bad , so ashamed and I go cry somewhere or just hug them and say I’m sorry .. I don’t know what to do anymore they drive me crazy and I never get a break .. my husband works all day comes home around 7:30 8ish so I have to do everything alone .. I’ve tried talking to him about this and he said it’s because I’m doing something wrong.. that they are misbehaving and fighting because of me that it’s my fault.😢😢 I feel so alone on this, I cook ,I clean take care of the cloths , do groceries ,take care of house all while taking care of my kids and still work 8 h a week if I have someone to babysit. I do speak with them at their level , I do give them choice for things we do for the day or on food, I do activities with them , we go to the park daily.. we go on walks ,play games ,we have a movie night.. but it’s seems like everything is a struggle you know? Like everything we do i have to put someone in timeout for misbehaving or screaming or running off or throwing food or hitting and sometimes I ask myself why did I even bother leaving the house in the first place ?! I can’t eat and enjoy a meal because they are always doing something and I have to always repeat myself over and over, they don’t what to eat or what to eat but not what they have on their plates ,they want to leave the table and so on and they do this at every meal so I have to eat alone sometimes to have a meal that I actually enjoy..I feel like they don’t care or listen to what I say most of the time and that drives me insane .. yesterday was one of those days where I just cried my eyes out thinking about what I’m doing wrong, i always wanted a peaceful home but it seems everything but peacefulI and I’m loosing my mind .. am I a bad mother? Because I feel like it right now .. 😭😭