The Sea Peoples are a modern invention, used to wave away problems created by blind acceptance of the conventional pseudochronology.
There are two references to them in Egyptian contemporary records, which are misdated by centuries anyway. There are otherwise no ancient references to them anywhere.
They left no characteristic pottery, no geographic traces, no towns, no tombs, no distinctive burials, no characteristic armor, no characteristic weapons, identifiable rulers (including conquerors of the lands they supposedly conquered) or king-lists, no written records in their own right, no coins, and perhaps most significantly, no wrecks -- the last one being pretty damned peculiar for a massive group of seagoing conquerors. :')
Even down to the Philistine style feather hats.