How did Samson bring down the Philistine temple at his death?

Answer: He pushed on its central pillars

Praying for strength once more, he pushed against the two central pillars. He killed more in his death than in his life.

“And Samson reached out for the two central pillars supporting the temple. Bracing himself against them with his right hand on one pillar and his left hand on the other,”— Judges 16:29 (BSB)