it seems like there is no build for which Human is the optimal race.
It's funny you mentioned that because all the builds out there in YT about any class, you'll end up being Thiefling, Half-elf (drow) or Drow. All the other races seems sub-optimal and it's sad that only 3 races from like 9 (I think?) are the best if you want to min max.
Larian should buff the racials of the other races to have more choice, even if it's not a 5e law. I mean it's a game not a tabletop why they have to be so purists about it? buff the rest!