game file + 2 PC accounts

Hey there I'm new! I had a question regarding a 2 game files I use on my computer between 2 accounts, which i have access to both. I went ahead and downloaded both to 'one' account, and never the other. they were both logged in as well. Despite that, I noticed that one game file showed up on the designated account i want, but for the other it shows up on 'both'. This is what im trying to avoid. Is there a work around to somehow make it so that when i download the game to one account, it doesnt duplicate itself to the other? It seems to have worked for the other game, as I can't see any signs of it being within my systems files, whereas the other game shows up for both. One thing i already did try was un-install-re-install to make certain i didnt download for both in the past, and the same thing happened. Im basically asking if there is a way to somehow, 'lock; the game file to one account, and make certain it doesnt show onto the other. Thanks!