The more you read on this Forum , the more you will find stuff you can do yourself...Some of this stuff is "Mechanics 101" and can be understood by most anyone.
..and the advice here is FREE..maybe not always correct, but preety good as far as I see.
We have a built-in error correction factor here that you won't get from your Guy..
If one of us gives you bunko advice , someone else is more than happy to correct that post...usually with glee...