failed laser surgery

If your goal is to remove the nail permenantly, then the objective is to destroy the nails growth center. Lazer treatment is one method, as is surgical removal or use of phenol - acid. If your objective is to grow a new nail that doesn't become ingrown, then additional treatment to surgically reduce the nail folds (tissue bordering the nail) enabling room for the nail tissue to grow without impinging or growing into the nail folds. Unfortunately having had multiple surgeries, you might want a second opinion, or your expectations may need to be adjusted.