Unity animating moves from past frames

Hi guys! I literally have no idea how to explain this or search this up so thats why my title makes no sense, so basically, I am making a reload animation for my pistol, but when I move my left arm to put the magazine back in the pistol, if I move my arm away in the next frame it moves it from previous frames, like imagine a hand pushing a magazine into a gun, it worked fine there, but when I move the hand away in the next frame it starts pushing the magazine in thin air instead of where I put it before. I really have no clue how to explain this, so I apologize for this bad explanation.

Thanks in advance!