No assistance

I recently drew a credit report for the purpous of bettering my credit score. I found 1 judgement ( handed over to pro choice debt collectors ), 1 default ( handed over to van rhyns attorneys ), as well as 3 accounts in arrears, of which one was handed over to norman bisset attorneys. I contacted all of these collectors and attorneys, and received setllement amounts from them. I paid all 5 settlements, and received paid up letters from these instances. These paid up letters was send to Experian, XDS and transunion. Experian adjusted my profile and updated everything accordingly. After sending the info to transunion as well as lodging disputes online, I have received feedback that 3 of these disputes were reinstated, as the evidence I sent was insufficient. No other details were given. I am trying to rebuild my credit score in order for me to better my future, but it seems like I am now hitting a brick wall with transunion. Please advise on way forward.