I have a $200 watch and I can't have an alarm? We have to pay for the smallest things that even Walmart watches come with? The free apps don't work and if I want a small thing, like an alarm, its costs? What the heck? I stay away from apple because of the ridiculous pricing but even Fitbit has an alarm!
Have you tried the Samsung app "Alarm"? It's free and works fine on my Galaxy Watch. It can be set and changed by voice. (I would like the possibility to change the default setting for new alarms to choose a sound and turn off vibration and not having to change that after creation but otherwise I like it.)