Hi welcome! This is a common issue where it is trying to play several animation at the same time. So likely it is trying to do something like play a walk animation and a carry animation together.
To resolve this you would need to add conditions to rule out animations and ensure two are not played at the same time, for example on your walk animations set up with keys you would add a condition 'carry key is not pressed' or 'carry animation is not playing', something where it will only walk when you are not carrying.
OOPS sorry for taking so long to respond hehe, school stuff :b. First, thanks for aswering me <3, and second, could you show any example of that? I get the main ideia, make sure that two animations aren't playing at the same time, I just want an example to have a better idea on how to implement.