Help me get a court order for my children!

Hi all, my name is Chrissie and I’m 36 years old. My ex wife and I separated in October last year, since then we have been unable to agree when it comes to coparenting, although I have begged to coparent, she refuses to. Last week, I found that CSA have been taking £514.22 out of my pay every single month for my children for the last 3 months, even though I have 50/50 custody, feed them and clothe them myself too. I have gone to csa to resolve this and try to replenish the funds. By me doing this, I have been unable to pay my rent and bills as I was also left in a heavy amount of debt. Since contacting csa to stop the payments, this has caused a lot of distress and upset to the point the police were notified and I can no longer see my children without a court order. In order for me to get a solicitor and fight out to see my children, I could really do with some financial assistance. My children are my world and everyone knows that and how much I love them. I already work two jobs and do overtime, which is lining the pocket of my ex wife. I adopted my children in 2022 after having raised them since the ages of 5 and 6. For 9 years, I took them to school and picked them up and revolved my entire life around them. I just want my children back but I cannot do so without a court order as the police are now involved.