Electrical issues

GFI can be a problem. Years ago I had one that would not reset because of small water leak.

Fixed it. I reset the gfi for the third time. Thanks for the help

True story: man came to me with a very nice high end Motor home and the exact same issue you have.

I ask him if he had an inverter (he did not know) well let's look
First door he opened was batteries
next was the inverter
Flipped the breaker from Tripped/off to back on and said 'Go check'
He went in and his wife ask "Does he think he can help"
Husband answered "he's already fixed it"

Suggest you check for an inverter
Breakers may be on inverter (his were very easily found sometimes they are in back) may be flip type may be push in to reset.

May also be a 2nd breaker box somewhere (That's my rig)

Is there a GFCI in the outside outlet to plug things into when under the awning? Maybe that one is tripped.

Tighten connections in the breaker box. Outlets are daisy chained using those cheap self contained devices, perhaps you have a bad connection there. If you can find an outlet that will still works, but can be switched off with the breaker, start there. Also, pull GFCI that controls that circuit and check it.

No we are 30a

If 50a service you're missing one leg.