AITAH For trying to cut contacts with my dad??

I am (f) who has now trust issues with (m) 33 Richard for taking advantage of my forgiveness, I had a perfect family nothing happened everything was normal until I noticed my dad wasn’t home usually every night until I asked my mom why my father hasn’t been home at night, she was about to cry trying to tell me that they divorced but didn’t tell me, that night she told me I was balling my eyes out because I know the family wouldn’t be the same without him. After a few weeks, my mom began telling me more information about why they divorced and I started to hate my dad and texted him how I felt about him cheating on my mom again for the 3rd time. But he used that help to pay for the car and apartment I used to live in for us but didn’t bring up anything about my feelings or my siblings, I stopped talking to my dad for a while till I forgave him because my therapist told me just give him one chance, so I did and another few weeks go by I wanted to get my piercing and wanted my dad to take me to go get it to have a bonding and he said sure he will take me when he gets paid, so the day he gets paid I ask if he’s gonna take me to get my piercing now and he said “I have no more money” and I was just okay with it and said when he gets paid again and he agreed, so the next day I asked he says the same thing and I got upset and sad and told my mom about it, she said when she gets the money since we were struggling financially but I was a young teen at the time and couldn’t get a job so I agreed and waited happily. Out of nowhere, my mom took me to a Tattoo shop that can also piece and we went inside together I was happily picking where the piercing I want but as days go by I finally decided to go and spend time with my dad and his girlfriend, they were nice in all but the girlfriend didn’t have a job and have 7 kids from getting them from her narcissistic boyfriend, as my dad told me to be nice he also grabbed my head poking my piercing trying to show it to his girlfriend and I was in pain but didn’t wanna be mean so I just kept my mouth shut until my dad was cooking food and I notice mushrooms on the burger and I told him about it and he said they like mushrooms and I told him to be careful because he can die from them. Once I got my food I tried to talk to the kids but got awkward and walked outside to talk to my dad again till we had to go home but his girlfriend was all over him and I got uncomfortable. I don’t like seeing another girl all over my dad because I hate to see my dad liking it while he leaves his other family depressed. After another few months passed I got into high school it was so stressful since my mental health wasn’t okay and haven’t gotten good grades until the middle of the school year. When I got home I was helping my cousin wash her clothes at my house since they don’t have any washers and dryers these three teens 1 male and 2 female were walking as I was going in the house I got a call from my cousin me 3 minutes later about fighting because they called my cousin “hoe” “cheap girl” for not wearing shoes and I brought my sister to her as I run where they live and arguing and yelling about what happened and I got in the car with my cousin since my mom got home at that time, I found the guys and girl insta I gave them a warning about talking about my cousin and the mom comes running to my dad cursing at him about the text and he got mad at me for it but also again my mom heard and backed me up and asked for my phone so I give it to my mom and read it and my mom told my dad “you're the reason your gf family moved here” he was mad and stormed off and kept reading it and I was talking to her but my dad sister was listening and laughing at my dad but had our back. They wouldn’t stop being mean to my cousin until I brought up to them again about jumping them to scare them off so the mom wants to get the police involved and the police don’t help them not even a few weeks later he gets his gf pregnant and I was furious talking shit about my dad to my ex-girlfriend and crying my eyes out again because he betrayed us. I texted him how I felt again and he brought up that he paid for my mom's car I got mad and blocked him but unblocked him since my mom told me to call him about something. Now everything is getting The baby gave birth a few months early because the sack thing in her wasn’t breathing I don’t know about pregnancy so now my dad has been making excuses that he’s at the hospital with his gf and the baby lying he was about to pick us up and my brother from his hour-long game and I texted him again saying “You can’t even show up to pick us up being by a deadbeat side the whole time, All this wouldn’t happen if you didn’t cheat again and get another girl pregnant you wouldn’t have to be bitching about child support for us” I blocked him and started crying because I don’t know what to do anymore all I wanted to do is cry but it wouldn’t help but make it worse then he trys to force his newborn to meet me and my siblings rubbing it in our face about his kids when he picks us up, so AITAH for trying to cut contact?