Which procedure would help minimize the appearance of scars and redness on hand? (photo)

I've been in a really bad car accident 5 month ago , which left me with ugly scars on my hand from glass cut. I don't think it's going away I also have one on my back which I injected with cortisone to flatten it but I think it came back . I've also tried some pixel laser on my back but it was 350$ for a session and I didn't see no difference cuz they said I need to do like 5-6. Any working options to make my scars at least not red ?