Credit Score Management

I have horrible credit, I reckon at 435 or so. I was a stupid 18 year ancient and got credit cards and never paid them. Now I am more responsible but I can’t be approved for any kind of loan (home loan) because of my dreadful credit from a year ago. I have distress believing the things that I see online and wondering if anyone has first hand experience with someone they can recommend to me. Thanks.

I have recently contacted RMCN to help me get some fake information off my credit report. Does anyone have any experience with RMCN or similar credit repair services they would share (positive or negative)?