We can certainly nitpick a lot of things, and the turnovers are definitely a big, annoying one.
But to me, watching Tatum completely vanish in the 2nd half last night was just demoralizing. The guy had 2 points total in the 2nd half and I'm pretty sure they came on a slam dunk. He was just brutal but overall, he was also terrible for most of this series. If you had to rank the players for this whole series combining both sides, Tatum probably isn't even Top-5 if we're being honest.
There's a reason people still think Doncic and others are better than Tatum. For one, even when those guys have bad nights they can still put up points somehow or find ways to make an impact. Tatum unfortunately though, while capable of a few monster games (Game 6 Milwaukee) has way too many "nights off" which can hurt the team too. Game 3 vs. MIL, Game 3 vs. MIA, most of the Finals series. Just can't happen. Got to be more consistent.
He's still young. He can definitely grow from this. But there's still work for him and Jaylen to do, especially the dribbling and protecting the ball (way too many careless turnovers and mistakes which cost us this series)