Mini Tummy Tuck Turned out Good but BBL Was a Flop.

I am 54 and always wanted to have a behind, finally decided that I was not too old and worked with this surgeon. My surgery was June 6, 2021. I feel my mini tummy tuck turned out pretty good, it was not a full but it definitely made a difference. What I am upset about is the BBL because he had more fat to put in but he threw it away, there is no fluff and I still need to either wear my faji or a but lifter to get some volume. Can anyone give suggestions of a reasonable surgeon who may have done revisions. I really don't know where I can take fat from to have enough to have a nice behind. I don't a big ole behind but