My M1 Mac is driving me crazy right now, please help

I have an M1 Mac, I recently installed Google Drive desktop, after I sign and it told me to close the Safari window which I did so, and then I closed all other windows
I go back into the finder to find a Google Drive installer which will open the app, but the computer thinks that Google Drive isn’t installed and is once I click the Google Drive DG file it gets me to the installer, I don’t need the installer all I want is to just open Google Drive can somebody please give me a hand