My girlfriend and I are both sailors in the Navy, so it's common for us to not see each other for long periods of time. In 2019 we saw each other for a total of 7 days for the entire year. Not ideal, but it's the nature of our jobs and I wouldn't have met her without it.
But I've recently been diagnosed with a whole host of mental health issues, which means that I can no longer sail and thus am stuck in a boring job ashore while I wait for my medical discharge to progress. This means my girlfriend is away often and I'm stuck at home waiting for her return. I have also realised that I have no friends, and that everyone we hang out with in social settings are actually HER friends that she has on board her ship. That means when she goes away, all of the people I know have gone as well. My family all lives interstate, which means I cannot see them very often so I spend my time counting down the days until she returns. I am introverted, shy and socially anxious so meeting people is a huge ordeal for me, but I can force myself to go out and I usually have a good time once I have calmed myself down. I've gone down to my local pub several times (by myself) in the hopes that I might make a friend but everyone is already there with people, so the bartender just feels sorry for me and talks to me instead.
I've even signed up for an app that helps you find friends, but I'm too scared to even message anyone. I feel silly for even going down this route, but I literally don't know what else to do.