Back when I was 4 I was stuck to the 220 mains because 4 year old me was quite the idiot. My earliest memories were from the months after that where I’d have waking nightmares constantly. Like some AR horror game would suddenly take over and I’d just see this horror scene play out while I was just walking around the house during the day. It wasn’t anything super gruesome, but it was also by no means pleasant.
ddrescue to the rescue! This is the best advice to get the data out. Don’t muck about too much because more things can fail. Use ddrescue to rescue the data and write a disk image somewhere else. Then make another copy of this one and try to do the filesystem rescue magic on that copy. Really make sure the bad disk marked as unusable.