ok had a look at the 2 videos.
I downloaded both of the games and tried them and again, no problems on my end. They installed and ran fine. i did notice in your video of Aviation adventure that there was an error unzipping. So its possible a bad file is the cause:
So maybe delete all the files for this game and try again.
Phantasmagoria is more interesting, it looks like it installed properly but doesn't start. The message at the start made me go and download and install it to see what happens when i try it. Again same message (swap disks) but for me it boots up with no problems. So i'm not sure what the issue is there. it could be the game files again, but i'm not sure what the zip file bundles. is it just the game or does it contain the other stuff the create the virtual environment?
This might be one for the Exowin3x discord for help as they probably have more indepth knowledge about it then i do.
The worst case scenario is perhaps reinstall Exowin3.1 again using the .bat file i mentioned earlier and try it again and see if Phantasmagoria works. and if that doesn't work, download a new set of files and see if that works.