Welcome to fcn. You've already taken a big step in coming here. Just follow the advice of @WomanOnTop (she's a very wise woman) and I don't think you will need to feel lonely for too long.
Welcome and have fun. Hopefully, the sad emotions pass quickly and you just enjoy being you. Life is full of these ups and downs and like a roller coaster, all we can do is raise our hands and scream and laugh and enjoy the ride. Cheers.