Need guidance on missed prayers due to unknowingly invalid wudu

Salaam everyone. I'm a recent revert and have been praying for the past 74 days, but I just realized my wudu might have been invalid. I wear socks a lot and thought I could just wipe over them with wet hands if I didn't take them off after breaking wudu. But I didn't know there are specific rules about the socks-mine are thin enough that you can see a bit of my toes' skin color through them, which I now understand makes the wudu invalid. I was doing it because, with school and courses, it seemed more practical, but I had no idea it was wrong. I've looked up different opinions online: many scholars say I need to repeat all those prayers, but I also saw a sheikh mention that prayers are tied to their times and can't be made up later if the time has passed. Some others said if it was done out of ignorance, I don't have to redo them. Honestly, I'm confused and would really appreciate clear explanations and maybe sources for these answers. What should I do? JazakAllah khair for your help.