My partner (31yo) died of cancer on Christmas day last year. Since then, it is hard, but also beautiful once you realize life is too short to be upset about things or postpone doing what makes you happy.

I reach out to people more now, and I am more direct with what I want. If someone says no, simply move on, life is too short to chase someone, the interest has to be mutual.

For socializing, going to a sports club is easiest (I go to table tennis), you combine exercising with meeting people .

And when you feel lonely, simply call someone: your parents, siblings, friends, etc... Talking just a few minutes with another human helps a lot.