To analogize with another ongoing conflict: the Ukrainian war could be over tomorrow if Ukraine unconditionally surrendered to Russia, but they’re sure as fuck not going to do that, nor should they.
Also, to be clear: I am absolutely not saying that Hamas are the good guys here. They are definitely not the good guys. But addressing an incredibly complex and nuanced situation in such a reductive fashion (“Hamas should surrender unconditionally right now”) is deeply unhelpful, and ignores why Hamas came into being in the first place, and why they further developed into such a threatening force in the region.