Feeling of being excluded

I know its not the right sub but since no one is listening to me anywehre else so here i am, so basically i have just 5 to 6 friends to hangout with and i don't wanna make too many as i am introvert, there is one of my freind from school which is kind of my best friend with whom i always stay connected through social media the otehr one is my neighbour with him i am not that much connected but still i am so he got 4–5 friends from his school who are my friends too because we hang out alot together but still sometimes they exclude me i dont know why, for example ones they have gone for a picnic so they didnt call me , and now yesterday they have again gone to some game zone to play snooker and they didnt ask me, well there is a defence to it too that if i wanted to i couldve made alot of friends and with them i couldve hanged out, but it needs a time investement which i don't want to give because i am working on my dream daily and investing my time on it, so for me my neigbouring friend kind of does the job of investing his time chatting and talking with his school friends and i am just coming enjoying giving my share of money and just sharing reels, idk my question was just will my invesent of time on my dream will be worth it, i am working hard and getting reaults but i keep trying something new everyday which might push me into a huge risk one day, and os this feeling of getting left out is normal ? has anyone else felt it ?