Blender anims bug

Hi!
I’m using the MrMannequin Tools to make some animations for my game but theres one problem I can’t fix nor understand.

I have this basic idle animation that while in the animation sequence player it plays fine as shown below but in-game it breaks.

Animation sequence player
image

In-game

But there’s more…

I alse have this one that’s broken in the sequence player but perfect in-game

Sequence player
image

In-game

Those weren’t my first animations the first one I showed (fine in the player but broken in-game) was the lastest I made and all the other ones I made have the same problem as the second one I showed (broken in the player but fine in-game).

I would really apreciate some help since I’m really new to animation, THX!!

Ok, so I just found out what was wrong… I’m so dumb… My weapon relative lcoation was wrong while in game.