Consider this... a person goes to college, gets a four year degree in
archaeology (or some antiquities preservation analog); spends summers sifting through sand and rock and gravel, all the while taking graduate level classes... person eventually obtains the vaunted PhD in
archaeology... then works his / her tail off seeking funding for an archeological excavation, with the payoff being more funding, and more opportunities to dig in the dirt... do you think professional archaeologists are looking hard for evidence of the Exodus on a speculative basis... not a chance... they know their PhD buys them nothing more than a job at Tel Aviv Walmart if they don't discover and publish...
so they write grants for digs near established sites / communities, and stay employed sifting rock in culturally safe areas... not unless some shepard stumbles upon a rare find in an unexpected place do you get archeological interest and action in remote places... not at all surprising that the pottery and other evidence of the Exodus and other
biblical events lie waiting to be discovered... doesn't mean not there... just not found yet...