I have the same feelings as you do. I used to have so many friends but now I have only one and we are good friends but not really close. I am much older then you and I see groups of women out to lunch or shopping and I realize they have made their group of friends so where does one find new friends that are willing to add someone to their group?
I am friendly and outgoing when I am out yet I am waiting for someone to say let's get together sometime. I have initiated some lunch dates with old friends and we did get together but they do not call back to set up any other plans.
I feel alone in a crowd.
You are young, so please don't give up on finding new friends.
Hugs to you