It takes a while to recover from a relationship that ended, especially if it was troubled or ended badly. Be kind to yourself during this time of recovery even if some things don't go well in that time.

It's by no means scientific either and just a suggestion but I personally follow a guideline that for every years duration of a relationship that ended I take at least two months to recover and become comfortable in myself again, like recently.

As for loneliness, it's like Leed said. But you're certainly not alone in being alone or single. There are millions of others who feel the same way and will in future.

And as I'm sure you hinted at already, do things or go to places you know you'll like and interact with various people there at the time or along the way who seem decent. If they're someone as non threatening as an old man or lady, get to know their personal stories.