The old handyman probably might not need new customers and even if they do, they probably don’t want random homeowners because the inexperienced tend to have unrealistic expectations and only own one property,
To provide a counterexample, my parents always had a handyman growing up. I think they still do. Not the same guy through all the years, but they've always managed to find one.
That is a B2B relationship, not a B2C one.
The old handyman probably might not need new customers and even if they do, they probably don’t want random homeowners because the inexperienced tend to have unrealistic expectations and only own one property,