I have never had this issue, but I'm on this forum to help others, the only reason why the firearm would not fire is
Defective ammo/primer
Or
Striker pin not hitting the primer
With that being said, since there is no safe way to check primers, and I highly discourage against it, varify that the striker is protruding out the battery with every cycle. You can do this with the slide off, pulling back the striker so the drop safety holds it, then, press the drop safety to release the striker.