It’s new. I get it. It will take time and no one can hurry up your “comfortableness”. And that’s OK.
I can tell you honestly that I have carried a Glock all day, every day for the last 20 years - AIWB for the last 5 of them. I know dozens of others that have done the same and no one has ever had an issue. On the flip side - people do shoot themselves - but outside the current crop of SigP320 issues (and the jury is still out on if they are NDs or ADs or a combo) they are almost all proven to be NDs due to user error (they are doing something to pull the trigger) and not an AD due to a mechanical defect.
One thing to remember that may make you feel more comfortable - Glocks are not fully pre-cocked like a lot of other striker fired pistols on the market. When you pull the trigger you are actually finishing the “cocking” sequence AND disengaging the three safety features before the sear lets go. That’s why the Glocks are still considered a double action trigger (they call it “Safe Action”, but your really doing 2 things, cocking and firing - hence double action).
A lot of the newest generation of striker guns are pre-cocked at over 95%, compared to the Glocks ~65%. This is also why guns like the HK VP9, CZ P10C, Walther PDP, etc… have the reputation for such “nicer” triggers compared to Glocks. This is also why you need inspect your striker/sear engagement when installing an new trigger/trigger bar and make sure any aftermarket triggers you use don’t mess with the trigger bar and keep the integral safeties and striker interface intact.
If you’re still having safety concerns or trust issues - this is a great device for when you are holstering:
https://langdontactical.com/glock-striker-control-device-scd/
It acts like a hammer on a traditional DA/SA pistol - you put your thumb on the slide plate when you holster. If anything makes the trigger move, you will instantly feel it and know to stop. Some people use it all the time. I got mine for when I take classes where the instructor requires it if you are going to work the class from an AIWB with a Glock.