Alarm in sleep mode not going off on watch

So my case might be very unique. I think I know what’s going on as well... but hope there’s something that can be done to change the outcome.

So, every night I wear my apple watch to track my sleep with a sleep app I purchased, my alarm doesn’t sound off the next morning.

I understand that your alarm will only go off on your Apple Watch if you are using the bedtime mode alarm to wake you up. Well, my Apple Watch is set to silent and I turned off the haptics. So, this is probably causing there to be no sound waking me up.

well, I don’t want to turn off silent mode or turn on haptics on my watch. I just want to have the alarm go off on my phone and use my watch just to track my sleep at night. Any suggestions?