I don’t expect an older designer to have that Rolodex because I am an older designer and don’t have one.
I just understand that that is a problem that wishing the world was fair in ways that benefited me won’t solve.
If the OP doesn’t have the Rolodex of people who would work with them again - like me - then it is a problem.
Or possibly a symptom of a deeper issue of why people don’t want to work with them.
Or possibly the result of bad luck.
Or some combination of all that.
None of which “it ain’t fair” changes. Either a person is so good they can’t be ignored or they aren’t. And sometimes what can’t be ignored is a chip on the shoulder.
[edit]
The comment points to reasons a younger designer may tend to be a better hire.
A younger designer might ask “what’s a Rolodex?” and then start filling theirs up instead of arguing about it.
It is easy to work with someone who is still learning. It is unpleasant to work with someone argumentative.
Came to understand that the hard way.