How can I stop being needy?

I'm in highschool
I don't have a friends but I have bullies
The thing here is people think am weird and unwanted for them and I tried to be one of them act like them try to make friends but guess am nobody type of friend its pretty painful and awkward sitting alone walking alone in highschool especially when there's a group of girls behind me like to gossip shit about me
Today I came back home crying I lost faith about having a friends even when I have friends on social media they don't actually care to be around
Why is this painful how can I stop being needy for people? Pls am highly sensitive
How can I stop being needy?
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