I think it is a paradox.
In some ways we are alone, but in other ways we are never alone.

Certainly many, including myself can realize that we are lonely as we converse with people we have known our entire lives.

The real issue is Connection.

We can be all alone with nobody to share things with or talk to, but still feel connected with everybody.

I can feel connected to my deceased love ones!

I can also feel disconnected from everyone.

Connection is what we all are seeking.

We eventually get there...