The faith of Mary and Martha helped raise Lazarus. The relatives and friends and apostles had faith. In the majority of His miracles, it seems to me that somebody’s faith helped Him.
Anyway, it’s just a theory which explains Q and TtT’s exhortations to stay positive together.
I don’t know about the faith of others helping Jesus, but that faith is what gave Jesus the opportunity to perform miracles. Jesus could have raised every dead person in Nazareth, but what good would that do if nobody had faith? He was showing people what was possible if they had faith. If Mary and Martha had said they didn’t believe Jesus could raise Lazarus, I don’t think he would have been raised. There was no lesson to be learned, and no affirmation of faith.
As the God of Heaven and earth, he doesn't 'need' help to do anything. He is the author and perfector of our faith. Heb 12:2