https://www.whatifsports.com/hd/PlayerProfile/Ratings.aspx?tid=0&pid=3323180

Why is he struggling? I know I am D1 but I feel he has the Tools to be a lot better.

75% of his shots are 3's, so that will normally lower the overall field goal percentage.
He was shooting 46.2% from the field in nonconference, so the good defensive players in the ACC are making it difficult for him.
79 stamina rating may be playing a small impact.
You have 80-85 in ath, spd and ballhandling, it's good, but again playing in the ACC, it's really just average at best.

Looking closer, he shot 46% in 10 road games in noncon, is shooting 43% on the road for the season, and is shooting 38% on the road in ACC games. He's also only shooting 35% at home, only playing against the ACC. I'd expect his home FG% to be much higher since you generally shoot worse on the road in this game. If it were me, I'd dial back his 3-pt attempts and see if that helps.

Edit: you have no one with an 80 or better passing rating which really hurts in a bcs conference.