Idk what i did to my baby daddy for him to hate me

And cheat on me.. he doesnt talk to anyone else with a anger but me .. idk why… im so nice alittle too nice i guess i got stepped on …and walked all over. He always blames me for everything the kids get hurt or feel sick or etc.. hes never here to help anyways he lives with his mommy. Lmao while we have 2 kids. Under 3 years old smh. he tells me i dont cook clean or watch the kids 😂when im practically here 24/7 and know my kids best than him . He doesnt know them at all . Its sad he has ro treat me this way and his family can support him not being a dad helping me with them giving me $… i have to literally buy everything!!! He’s basically a deadbeat.. but out of his family friends etc why dos he treat me like this yells at me doesnt like me treats me like shit ? When im the mother of his blood . I am trying and learning! Im not perfect and will never leave them for even a day like he does he goes months not seeing them and thinks it’s normal to just pop in and be a “family” lmao …. Ugh im so tired depressed stressed..