Hashem already setup your sons and everyone else’s son/daughter zivug 40 days before they were even born forget about the fact that now they are holding at around 20 or so years later since born. Hashem has their zivug waiting for them and can send it to your son immediately but is just waiting for each person involved in shidduchim to do their RUCHNIUS hishtadlus of Bitachon and Emunah(faith and trust in Hashem) together with Tefillos/Prayers.
Are YOU doing your RUCHNIUS hishtadlus? Not just your gashmius hishtadlus of dating and speaking to shadchanim etc….?
Start turning directly to Hashem for help in all your needs especially shidduchim that they say is a bigger miracle to a shidduch then the splitting of the Yam suf.