Animation resetting to the muscle pose

Hello! I am trying to animate my character, however whenever i hit record in the animation tab, he resets to the default little muscle pose. https://imgur.com/a/2X9Fkwu I have had this problem for about forever, and i always animated without an avatar. Why this is an issue this time, is because i have somehow made a magic trick and made it work with the default ethan movement animations. It has a full humanoid rig, however this just happens. I have no idea at all why this is, and it has so far happened to me everytime with every character i imported ever.

I have tried to remove the avatar, animate and then put it back, but that somehow resulted in everything that used the animator of the thirdpersoncontroller to completely brick and everything was in the default muscle pose. This is an insane thing! Why does it happen? And how the hell do i fix this?