CANT SAVE WORK IN UNREAL ENGINE 5.3

I have triend everything i just cant save my work in unreal engine 5.3 i have re downloaded it and everything i but its kind of strange even though when i load my project again it shows the defult preselected environment i can press cntrl space and dobble click my environment but i cant load charicter model somthgin is definatly wrong it knows i made and saved the things but it wont load it i can see every asset but i cant realy use them??? in need help