URGENT Lost SK_Mannequin in starting content how do i recover?

First i was fiddling around if i could get to change the character to a gorilla, then suddenly i lost the animations of the character, so then i fiddled around and now i lost the textures of the character as well.

On the right i should be able to see SK_mannequin but now i can’t see it anymore.

It still shows up in my files but i don’t how and why i cant select it nor open it.
Yes im new to this engine. Please help this is urgent.