NPC doesn't face direction when adding parts

[PooIShark_1 (Shark)]

I have a Troop System to move Troops and I am adding the feature to attack enemy troops.
I wan’t them to automatic attack near enemy troops when they are in the red circle and go to enemy troops when they are in the yellow circle.

I added the parts and welded it together but now the npc doesn’t walk like he should be.
Is something wrong with my weldings?

[StonksMcHat]

Problem turning is probably because the circle part is heavy? Make it Massless.
Possibly you accidentally disabled Humanoid.AutoRotate.

[PooIShark_1 (Shark)]

I didn’t made it massless. Thanks!