I'm totally a weirdo. I have no friends. I don't have any pictures that capture with anyone, any places, even selfie. I don't go to any restaurant, anybody's wedding, music concert, festival, shopping mall,... any places that crowded and need someone to go with. I can't do anything that requires more one person. I'm totally freaking lonely and don't know what to do any more. Please share your story, your experience. It might help me.
I'm not going to sugar coat it for you Doraemun (you're a fan of Doraemon too, huh? He's so cute! haha) but a lonely life without friends is hard. We weren't meant for extended periods of solitude. That's just not what evolution intended for us humans. Going out by yourself might be helpful, it's good to at least get some fresh air and have a walk around. It might be helpful if you have a hobby or two that does not involve purely sedentary behavior like movies or TV. Something that really excites you. Though if you are depressed, I imagine that hardly anything might interest you, that's sort of my case right now. I used to really enjoy video games, and now it just feels like I'm using games as a means to distract myself from my negative thoughts and loneliness.
The one thing I can tell you is that you're not alone in feeling this way. Tons of people in this forum (and outside) feel just the same as you right now. It is rough right now, but it will get better. I don't have proof that it'll get better, but you have to have faith. Get out of your shell once in a while, try to meet new people... you will experience rejection, but probably also some acceptance.
And always remember, if someone rejects you, it is not because there is something wrong with you. They may have just failed to see the positive qualities in you. Even though I hardly know you, I'm sure you have many good qualities going for you, reasons that people would want to be your friend. For example, you may be kind, a good listener, perhaps even funny in a certain way.
Don't give up! We're with you all the way.