Practical advice about how to cope?

31yo here guys. No circle of friends, no close friends, really struggle on daily basis to get myself some company.

The question is for anyone in the same situation; when something significant happens to you, say a break-up (with the partner who was the only real company you had), or problems at work, family issue, and so on, how do one deal with such a stuff without having anyone to chill with, dump the pain over, or just have them as company?

My therapist mentioned, that when someone is so alone, it is way harder to deal with painful/confusing moments than when having company and people who they trust and are around..

What do you think or do in such a situation?