Recc?

not all of these are with fathers but stories are sweet

father, uncle, daughter -- https://www.mangago.me/read-manga/dad_the_beard_gorilla_and_i/

adopted daughter -- https://www.mangago.me/read-manga/the_monster_duchess_and_contract_princess/

child sets off on journey to find his mom -- https://www.mangago.me/read-manga/on_the_way_to_meet_mom/

goes back in time, some father daughter interaction -- https://www.mangago.me/read-manga/i_ll_be_the_matriarch_in_this_life/

adopted son -- https://www.mangago.me/read-manga/papa_wolf_and_the_puppy/

adopted daughter -- https://www.mangago.me/read-manga/the_chick_class_hunter_is_filial/

two orphans get adopted. older sibling dotes on younger -- https://www.mangago.me/read-manga/gakuen_babysitters/