Growing up realization

I just realized that a part of growing up is having no friends to talk your problems about (and is the reason why I searched for this app). Just now, I cried because I felt so lonely but the reason is silly honestly. I was planning on going on a hike, and invited my friends. They ignored me. Might be because they are so busy with their own lives, and I understand that. Silly right? Crying because your friends can't accompany you to a hike. But I dunno. That just made me cry honestly. Initially to the hike invitation, I invited them to play billiards, and was ignored again. They're not assholes. I guess they feel sorry for rejecting me. I understand it. Well, this is the end of my silly rant. Bye.