https://www.mangago.zone/read-manga/phantom_tales_of_the_night/
https://www.mangago.zone/read-manga/carp_with_thousand_eyes/
https://www.mangago.zone/read-manga/to_you_the_immortal/
https://www.mangago.zone/read-manga/marriage_toxin/
^The other MC has an uncomfirmed gender iirc. Also it's haremish in it's execution but it's not really male gazey. So read with caution
https://www.mangago.zone/read-manga/tsurenai_hodo_aokute_azatoi_kurai_ni_akai/
^WAY more male gazey but I think it might fit? The character is the love interest instead of the MC though.
https://www.mangago.zone/read-manga/mikazuki_mao_can_t_choose_a_gender/
https://www.mangago.zone/read-manga/maybe_akira_kun_maybe_akira_chan/
https://www.mangago.zone/read-manga/magical_change/
https://www.mangago.zone/read-manga/elqueeness/
https://www.mangago.zone/read-manga/the_daughter_of_the_elemental_king/ (kind of, body has no gender but mc thinks of themself as a female)
https://www.mangago.zone/read-manga/alien_idol/
manga where the MC can switch genders or is genderfluid