Is it maybe because you consider your friends to be weird, so nobody wants that level of judgement when they join your friendship circle?
To hamfistedly adapt an oft-quoted phrase: "if all the people that want to be your friend are weirdos, then maybe you're the weirdo".
That said, I'm taking the view that you're here for a constructive opinion and not just for a kicking, and I'm aware of the sensitivities around the nature of this community - so have you considered being more of what you want to see in others? Positivity and personality focus are super attractive qualities (in a platonic way) and by bigging up your friends positive traits rather than ragging on their own little annoyances makes you more of an attractive person to befriend.
I don’t like that they’re bad at sports. I’m better than them, and I don’t even play sports. My friends always pass the ball to the next person open, which happens to be their friend, so I think they’re targeting me.
They hardly ever pass the ball to me when I can shoot some awesome hoops!
If it wasn't for the last line, I'd have sworn you were Stuart Hogg with a secret Lemmy account.
In all seriousness though, when you talk during the game or afterwards, what is the outcome when you ask why they overlook you as a recipient for a pass?
To address your initial friendship issue, maybe it's time to join a sports team that allows you to develop even more and exposes you to more friendship opportunities?
As someone who loved basketball, I get how this can be frustrating.
All I can offer is that they might find different aspects of the sport fun than you do: for them it might be more about feeding the ball to their friend to reinforce trust and solidarity with them.
The advantage to being a, shall we say, 'colorful' individual us precisely the ability to meet other colorful people. (In this context, I just mean interesting people, just to be clear.)
Don't forget, there is no 'normal' that needs to be adhered to; frankly, I think many non-neurodivergent individuals only programmed themselves that way cause they're afraid of being "different". But, if you're no different than me, who the hell am I? Who are you? It makes no sense.
Anyway, I just want to encourage you to try to find joy in having "weird" friends...if you can. What better way to enrich your own perspective on life, after all?