my hammer is very very broken

[the failed Gardner]

i made a test map with hammer and took a break from mapping but today when i came back i found that half my textures are missing/broken my prefabs file is empty and am missing a lot of models and the "info_player_teamspawn" does not work and even when i opend hammer++ it broke things even more and made everything to obsolete like in the pic

 

[the failed Gardner]

edit i uninstalled tf2 and deleted all the files and its working but some textures are weirdly different