I thought the Philistines were the Cretans............
That was one theory and may be partially true. The Philistines if they are truly the descendants of the “Sea Peoples” are likely more then one group. I’ve seen theories that some came from Sicily and even further west.
There’s an OT reference to the Philistines’ origin being Caphtor, but Caphtor refers to Cyprus, not Crete.
https://www.varchive.org/ce/baalbek/caphtor.htm
Cretan history goes back to the stone age. the Philistines were iron age. you are missing a piece of the puzzle here