Oh dear. Your problem is that you let Apple talk you into "up"grading to 10.15 Catalina. Your life is now over. Sorry. Game over.
I guess I can never buy a new Mac again. :~(
But it's great that you get "Move to Bin" instead of "Move to Trash"! It took me a while to figure out what it meant, because "bin" for binary is the name of the directory where the Mac OS (which is NetBSD under the hood) keeps executable application files (as opposed to the applications users are supposed to use, which are in Applications).
Oh, actually, open a Terminal window and say
cd /Applications/3D\ cube/Contents/MacOS