Hi nini90. Happy birthday. I know it is hard to enjoy a birthday when you are alone. Social anxiety is hard. I did not have it when I was young, but now I have it as I am older.

Being in your last year of college your studies probably keep you very busy. I am thinking outside of that, find out what hobbies or talents interest you. If you join a group based on things that interest you it may become easier to mingle and make real friends.

Love and hugs to you. I wish you the best.