UNREAL 4.25.4 won't launch on mac os 10.11

hey all
i downloaded unreal via epic games launcher a month ago and back then i opened it and had no trouble.
Today when i want to open it it says nothing and the epic games windows don’t close, but simply goes on the background and does absolutly nothing.
I wanted to uninstall the unrealengine app but it doesn’t show in my app folder… so i dont know what to do
anyone got an idea?