A proper holster is an essential piece of the safety mechanism of a Glock pistol.
If, after acquiring a proper holster you still feel uncomfortable, get a trigger block for your Glock.
If you're still uncomfortable after that, you need a Smith & Wesson revolver.
That I could be wrong is an eventuality that has not escaped me. I just painted the pictures as I saw them. I do not know how to do anything else. (Saint Elmer, 1955)