Can anybody please recommend me some stories similar to “Sincerely I became a dukes maid...

these have the maid aspect to it, if that's what u wanted!

http://www.mangago.zone/read-manga/the_crown_princess_audition/

http://www.mangago.zone/read-manga/surviving_as_a_maid/

the most similar i can think of is this one though, with a little twist behind it

http://www.mangago.zone/read-manga/the_lady_i_served_became_a_young_master/

Thank u so much

np ! ヾ(❀╹◡╹)ﾉ~