Early in the pandemic, I learned of an app called Dialup which offered a service called Quarantine Chat. They call my telephone at some random time every day, and I am connected to some other random Dialup user, somewhere else in the world.
Most often, conversations never moved past the awkward stage. I've not accepted calls from them for many months now, but I did have a few interesting/memorable conversations on the app, from people in my own city, to people halfway around the world.
I have not used the app so I don't know about the settings available. However, if it calls at purely random times during the day, you may not be in a state of mind for such conversations. Whereas in a more "organic" setting, you have primed yourself for it and if the other party is happy to participate, it will probably be more mutually enjoyable.
Last I used Dialup, you subscribe to topics and can choose between different schedules with different frequency. This makes it predictable enough to work. You can always hang up when you get a call.
Most often, conversations never moved past the awkward stage. I've not accepted calls from them for many months now, but I did have a few interesting/memorable conversations on the app, from people in my own city, to people halfway around the world.