I have lived alone all my life, never even lived with anyone, and yes it does get lonely sometimes. I keep busy, and I am never bored, there's too much to do in this life to be bored!
I do so by working out, playing music, chess, dominoes, going for long walks, I have 2 cats, 2 cars, and having to do everything, I seldom stop to think about it. I use the internet for what it is designed for...communication!
There are sites for dating (I avoid those lol!), friendships, pen pals all over the world (online messages not actually writing a letter lol), sites for everything. I make connections like that, and at my stage of the game of life, it's the only way for me! Even on the gaming sites I have friends there who message and email me.
I send them pics, videos, fun stuff! Joining groups or volunteering my time is not for me.....I have done so much for so many people I have known throughout my life, that the rest of this life is for ME

! Make some connections, communicate, have fun!