I dont know if anyone else is experiencing this, and I own a samsung S22 Ultra. I have set up a Mode with a wake - up alarm which works nornally 99% of the time. But every once in a while the alarm doesn't go off, and this causes me to nearly be late for work, which is a big deal.
Now I dont know if it's related to using Modes or not, hence I stress that point. I do use standard alarms and have now set a following alarm to see if that helps. But I wanted to highlight this because it is random and unusual, but it is frustrating when I can usually put faith in it to work.