Had the same crisis - I split from my long term partner after 14 years at 33 years old. Was happy to be alone for the first time in my life then within two weeks the dread of loneliness started creeping in.

My advice is find a social outlet - Group exercise like CrossFit and Run Clubs help a lot and cater to all people.

Also - restarting your life alone is expensive, but you will never again have a cheaper cost of living. Take the opportunity to save so you can let the good times roll when you find someone.

Also also - I had zero luck on dating apps, I think their prime days are over, and they’re superficial. Don’t bother with that negative feedback loop.