Will our species go extinct? The short answer is yes. The fossil record shows everything goes extinct, eventually. Almost all species that ever lived, over 99.9%, are extinct.
Some left descendants. Most – plesiosaurs, trilobites, Brontosaurus – didn’t. That’s also true of other human species. Neanderthals, Denisovans, H. erectus all vanished, leaving just H. sapiens. Humans are inevitably heading for extinction. The question isn’t whether we go extinct, but when.