Stop saying "nobody loves me".
Stop being bitter when you see couples together just because of the mere fact that you're alone. And most importantly, stop feeling sorry for yourself. I know you've probably heard this a thousand times but it's okay being single.
It's okay if you're alone. It really is. Love is a magical feeling. And I'm sure it must feel amazing to love someone and be loved in return but it's also amazing to discover more about yourself. Being single does not hinder you from doing the things that you think only couples can do.
Travel and get lost in another country with yourself or your friends. Meet new people. Breathe more experiences. It doesn't really matter if you're not spending those moments with your boyfriend or girlfriend. What's more important is how you remember it.
What's more important is how you live your life. And if you think doing those stuff when you're alone is pathetic or sad, well you're wrong. I think it's liberating and brave because you haven't truly lived your life to the fullest if you're not ready to be on your own. Since when did your relationship status define who you are and who you want to be? You are built as a whole. As an independent individual.
Don't rush things because eventually, things will just fall into place. All you need to do is just enjoy every moment. Focus on your goals and dreams but most importantly, love yourself. People get so caught up on trying to find a person that will complete them but maybe all you need is just yourself to start saying "i love who i am", looking at couples, no longer bitter, but with hope and admiration in your eyes, and no longer feeling sorry for yourself, but loving every flaw and mistake you have committed and embracing the single life. Being single is hard and lonely sometimes. There's no denying that. But you don't need to be in a relationship to feel loved because you are already loved by so many people. And you don't need anyone to make you feel complete because you can discover that on your own.
Always remember that at the end of the day, all you have is yourself and that's all that really matters