If I get to the point where I cannot do the work myself I will give up travelling by RV. We have travelled many thousands of miles & had our share of things going wrong. The most difficult & unpleasant has been changing out electric black tank gate valves, a 2 person job which the DW ably helps with.
The vast majority of repairs are very simple. More time is spent diagnosing the problem & figuring out how to fix it than actually doing the job. Over the years we must have saved ourselves tens of thousands in labour doing our own repairs.
So many seem to be very quick to use the credit card to fix what turns out to be a minor problem & they get socked with a huge labour bill & who knows how long to get the job done. YouTube is my friend, my first stop for an issue I am not familiar with.