Normal alarm not going off

I have been using the sleep focus feature for a while with the regular alarm in the clock app instead of the sleep | wake up alarm, and it has been working fine but all of a sudden today it did not go off at all and when I checked my phone lock screen it said “no alarm” instead of my usual alarm that would display. I didn’t alter any of alarm settings and it was working perfectly fine up until today so I’m confused why this happened.