There is nothing wrong with being lonely but the fact that you are depressed about it is a sign that you are letting it control you far to much. Come to terms with the fact that being alone or lonely isn’t the end of the world, yes it is fine to feel alone but if you accept it and like being alone then you will be at piece with yourself. You are the only person that will be there for yourself and if you can be there for yourself you will be able to handle anything. I love being alone and yes I have moments but when it comes down to it I think there is something to be proud of if you can be alone and not depend on someone else. When you meet that person that will be there for you it will be worth it but concentrate on being there for yourself and being happy for yourself without the help of someone else.