how can put different clips in the same timeline

hi guys, I need your help. maybe has someone here could help, with one problem i had in the timeline.
I have one character I made with magicavoxel and 5 animations with I made with Mixamo.
But the problem is every time and I tried tu put another clip in the timeline the character start the animation with different position like this image below.
i'm beginner I hope has some here.
thanks a lot