Apple Watch Focus modes broken, settings constantly reset

I have an Apple Watch Series 5 and am currently having a very frustrating experience with Focus modes. The main issues are:

Fitness focus won't turn on automatically:

I have a Fitness focus that should automatically turn on whenever I start a workout on my Apple Watch. However, the setting to start the Fitness focus automatically is toggled off every day. I have to manually check the settings and confirm that it's toggled back on, otherwise it will not engage the Fitness focus on my devices at all. This has been happening for weeks, and it seems to reset every day after I take the watch off the charger. Why would this go back to the previous setting regularly?

Do Not Disturb stays on indefinitely:

Furthermore, every day when I wake up, my Apple Watch is still set to the Do Not Disturb focus. The DND focus should have ended an hour or more before I wake up, and even my iPhone and iPad are already on Personal focus. But for whatever reason, the Apple Watch does not switch over as it should. This is quite annoying as I may not always notice and can miss many notifications as they are all coming through my watch instead of my phone.

I have already tried:

• Deleting and re-adding the Focus modes
• Completely resetting my Apple Watch to factory settings (no backup restored, configured as a new watch)

Short of getting an entirely new Apple Watch, I'm out of ideas for what else I can try here. Any input would be appreciated. Thanks!