So… on the first point, hasn’t every series had at least one character who has to find themselves throughout the series? Weasley in TNG. Nog and Jake in DS9, Harry was on his first posting after the acadamy I believe in Voyager, Tilly was a cadet in Discovery and later Adira joining the crew and trying to fit in, Uhrua’s whole story in SNW is that she doesn’t know where she fits in, Prodigy is about a band of misfit kids trying to find a place they belong, even Worf’s whole arc is about him trying to find who he is and where he belongs as well. This is something that Star Trek has always explored.