I rented a resort property a few years back that had a very sophisticated security system. The damn thing kept going off and we couldn’t figure out why. It was a very large house and it scared us to death. We ended up calling the security company patrolling the resort and had them shut it down completely.
The motion detector can be a source of pain with home security systems. Had to turn it off because the cat set it off. Now my motion detector is a .45 auto.
Motion is a complete pain in the arse so I never use it anyway.
I have a very simple system by Wells Fargo, it’s now monitored by American Alarm. Sophisticated systems are OK but in most cases are overkill and like you, many people get frustrated trying to figure out how to operate the damn things.