I made a mistake I regret - seeking forgiveness and perspective, assalamu alaikum

Assalamu alaikum. I’m a 22-year-old man and I’ve done something I shouldn’t have. I sincerely regret my action and accept full responsibility for it, and I’m asking Allah for forgiveness. I also want to explain why I felt pushed into that situation. I didn’t have much support or guidance about how to do things properly, especially when it comes to marriage. My father died when I was young, I’m not close to his family, and I live with my mother and stepfather. My mother is against me marrying right now because I don’t have a job. I just graduated and I’m having a hard time finding work. I understand her worry - marriage is a big commitment - but it makes marriage feel like an impossible goal at the moment. On the woman’s side, her parents are from a different ethnic background and they are strict about ethnicity and skin colour, so they see me as an unsuitable match no matter my intentions. I’m not blaming anyone for what I did - it was my sin and I own it. But I do feel families and society put a lot of barriers in the way for young Muslims who want to marry properly. That pressure and lack of realistic support can push people into making wrong choices even when they want to do the right thing. I’m asking for advice and for dua on how to move forward, repent sincerely, and find a halal path to marriage despite these challenges.