Nice to see people still replying to this. Well, this is what I've learned so far. The launcher does indeed help, but what I didn't know what that all I had to do was right click on the downloaded app and right click on it, find the permissions tab, and check something like "allow executing file as a program" or something like that. I was able to run the launcher, and it made it easier to download and install games. I don't even need the launcher now, but it's nice to have.
Anyway, I do agree with your point there. I love Linux now, but it's made for some frustrating moments here and there.