kind of hard to even say who the 'indigenous' people of the levant and palestine even are
the kingdom of israel wasn't the first polity to exist there, in reality 'judea' was one of the various caananite / afro-semitic language speaking states in the area
the genetic inputs of the peninsula arabs elsewhere are mixed depending on the places they colonised through islam (which is really an ethnological religious meme promoting arabization) during the muslim expansions in the 7th century
egyptians are only somewhat 'arab' (about 20% or so), mahgrebi people even less so
levantine peoples such as the syrians, 'palestinians' and lebanese also only somewhat arab, but subsumed to an extent the different greater pan arab identity family
really shows you the kinds of games that can be played with the term 'indigenous' but if we're going to connect common ancestry and claim to a particular geographic place (uh oh why are only non-whites the only people who are allowed to do this) doesn't seem unreasonable to me that at the least the palestinians have more of a legitimate ancestral stake in the area than, at least, the ashkenazi/rhine jews who as much european as they were are levantine, while the mizrahi oriential jews (think avi yemeni lol) have probably been in the area about as long as the arabised palestinians have and ancestrally are about as similar to whoever was originally in the area
wat hamas did at that festival was pretty brutal but to be honest not much different from what the israelis do virtually every other week, the only difference is the jews run the media in western states (sometimes) the governments as well, so we have to hear their whining regarding war crimes committed against them far more frequently than the other way around
israel certainly isn't invincible (was nearly defeated by egypt in 1973, little known fact) and most definitely lost to hezbollah in 2006, and hamas goal here if it has one is to lure the IDF into a brutal boots on the ground urban confrontation that they hope will in allies such as hezbollah and the IRGC, it almost definitely won't succeed and israel will win but it will be extremely costly for them