You just have to continue your hishtadlus. If you tried at syas and it didn’t help, change shadchanim. Every shadchan there is independent and they all know different people. You can change shadchanim as often as you want. I would also suggest emailing as many of the shadchanim as possible. They will all review your profile and look whom they know for you. I have found this to work.
Try sawyouatsinai.com and sign up for two of the local shadchans. They have good results.