How is it fair that I should lose my house for a child I’ve never seen?

Can anyone help ? im paying arrears on a child that was born 10 years ago ,the child was with his mother and her partner who addopted himwith my peermission due to my dad being unsafe around children.

At the time i thought it was in the best interst and safety of the child , ive never seen him or spoke to him as i have no parental rights it was hard enough to get over the fact that i was in no position at the time to protect him and living everyday with that at the back of my mind.

Then on top of that the csa are now taking nearly 90 pounds a week off me for arrears im now facing losing my home my job and my family how is this right or fair i need help desperatly.