Alienated, should I give up my rights

I have been having difficulty with child contact for 4 years since I separated with my sons mother. I was spending 3 nights a week to start which. When she realised how much money she could claim via CMS she stopped me seeing him.. 7 months went by.. I was granted 1 hour calls. Which lasted no more than 10 min and mother would encourage him to not talk and did her best to distract my son to stop him talking. After 7 months I went to the contact centre which should have never been the case. But she was claiming DV and mental health, so cafcass got involved, which I proved in court that it was all fabricated. I eventually got reunited with my son.. untill I wanted to extend over nights. O had changed my hours to accommodate our son, which before mother would encourage more time, bit when I wanted it on paper. She would refuse.. I was then the worse dad in the world. The replacement of a dad started. Lying through her teeth... I got more time eventually. Then she found out I was selling my home and planning on moving in with my new partner 2 years after we split. Guess what I was again dragged back through the courts.... she then found out I was having another child. My little girl.. guess what she applied to courts again to stop over night stays. Claiming I was abusing our son, telling him I had been in prison. Telling him I use to hit her. When truth is, she use to hit me!

I raised concerns in court, which after she wanted to make an agreement out side the courts, which was 50/50. This confused me.... this year I managed to get a larger home, so my son had his own bedroom, he picked all his furniture and was excited as it meant 50/50. But as soon as I got the keys.

My son would hit my partners girls. Threaten my partner. Throw things at him, stating I was beating him up, he was act scared when I went near him... he would tell me that his mother said he has to ring child protection line. And that his mother has told him everything about me, but I couldn't grasp what... it was anything she could think of that was negative. My son started to hate me. Refusing to stay and talk to me. I would attempt school pick up and he would run away acting scared then laughing at me as he ran to his mother. Which she would grin.

She again attacks my daughter making claims with social service, telling our son that my daughter is not his sister...

I've not seen my son now for 3 months and she's now applied to the courts again claiming abuse.

I called the police about everything they are not interested, I contacted social services about the control and coercive behaviour and they ignored it.. to no I feel like I've failed as a father to our son. I feel that he has become his mother and I will never have a relationship woth my son... all this just for money... so I'm now feeling I have to give my rights up as I can not continue anymore.

I've had to seek counselling and my GP to get help with my emotional wellbeing.

I'm so lost and numb