Hey Jenny,
Your question is very honest. I think there is something inside of everyone, that feels a little alone. We can drown it out at times, but we crave more than this life can give. There are times we feel it more acutely. There is a verse Isaiah 61:3, that says, "Put on the garment of praise for the spirit of heaviness (some versions say spirit of despair or faint spirit)". There are a lot of ways to apply this. For me, focusing on the blessings, while it doesn't change the circumstances, it alters my perspective. Being grateful doesn't minimize your depth of pain, but rather, helps you to navigate it. Loneliness can dry up the bones and make us practically disappear. Finding ways to renew your spirit is essential. I had a time where my closest friends had scattered across the globe. I was single and I had no family nearby. I decided to search out people. I deliberately started inviting people I liked, over for a meal or to meet at a restaurant. I'd make it a small group and it was wonderful. It was something little but I decided to choose my actions rather than wait for life to improve on its own. I wanted to act rather than react. I am glad that you posted this question and I glad that you are here.