Do you want to play more organ recitals but don't have the permission to do so?
The best opportunity, of course, is when you don't need a permission.
If you want to play - play.
Record yourself, post it online, watch it spread. Repeat.
And when you do ask for permission, most importantly - do not spam.
Earn the trust of your prospects by helping them many times before you ask anything in return.
Even then, know that they don't owe you anything.
There's too much noise in the organ world and in order to cut through that noise, you have to answer this question:
If somebody substituted their name instead of yours in your proposed organ recital, would the proposal still make sense?
If it would, then it's not a good proposition and you are not likely to get an invitation to perform. Maybe by accident once or twice. And waiting for accidents is not a reliable way to build a career, though.
The magic happens when you propose to do things that no one else can.
Find out what those things are.