Cline has out 1177 B.C.: The Year Civilization Collapsed which has concepts in line with this post. I am on the last chapter now.
The “Sea Peoples” seem to have impacted all Mediterranean civilizations, not just Egypt.
Yet, the Sea Peoples left no characteristic pottery, no geographic traces, no towns, no tombs, no distinctive burials, no characteristic armor, no characteristic weapons, no identifiable rulers (including conquerors of the lands they supposedly conquered) or king-lists, no written records in their own right, no coins, no homeland, and perhaps most significantly, no wrecks -- the last one being pretty damned peculiar for a massive group of seagoing conquerors. :')
The Sea Peoples are a modern invention, used to wave away problems created by continued uncritical 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.