More info needed before good ideas can be found. WHY do you want to change the breaker? Normal we would reset the breaker unless there was some reason to think it had become defective. NOT a good idea to move to a larger breaker as it is there as a way to keep us from overheating wires and causing a fire. Step one before changing a breaker is to make sure there is not a good reason for it tripping.
The change is part, deciding when and why to change takes more thought.
It is highly likely that one of your GFCI outlets has tripped cutting power to the remaining outlets downstream of it. Check all your GFCIs - they may be near the floor - to insure one has not tripped. In a Winnebago coach, that is the most likely place to start looking. Good luck
09 Journey 39Z
We experienced power loss to our outlets on our 2018 view j. The power would come and go on each outlet randomly. We took it to our RV specialist and after tracking the wiring down, he found that the junction boxes on the view were too small and the electricity was jumping across the wires. He had to add two junction boxes so the wires were not jammed together in a single box. He expressed concern that the electrical engineers had screwed up and anyone with a view could have this problem in the future. If you can not find your problem in the fuse box, then this could be happening to you.