hi! try these:
http://www.mangago.zone/home/mangalist/802678/?filter=&page=1
http://www.mangago.zone/read-manga/truthfully_they_only_remembered_her/
http://www.mangago.zone/read-manga/the_villain_discovered_my_identity/
http://www.mangago.zone/read-manga/may_i_ask_for_one_final_thing/
http://www.mangago.zone/read-manga/light_shadow/
http://www.mangago.zone/read-manga/emperor_and_the_female_knight/?hI8E
http://www.mangago.zone/read-manga/charlotte_has_five_disciples/?8FKY
http://www.mangago.zone/read-manga/i_ve_become_the_villainous_emperor_of_a_novel/
http://www.mangago.zone/read-manga/beware_of_the_villainess/
http://www.mangago.zone/read-manga/from_today_on_i_m_a_boy/
http://www.mangago.zone/read-manga/the_demon_king_wants_to_die/
http://www.mangago.zone/read-manga/kimi_wa_maid_sama/
http://www.mangago.zone/read-manga/i_m_stanning_the_prince/
http://www.mangago.zone/read-manga/i_am_a_child_of_this_house/
http://www.mangago.zone/read-manga/when_the_villainess_loves/
http://www.mangago.zone/read-manga/shadow_queen/
http://www.mangago.zone/read-manga/it_looks_like_i_ve_fallen_into_the_world_of_a_reverse_harem_game/
http://www.mangago.zone/read-manga/the_lady_and_the_beast/
http://www.mangago.zone/read-manga/a_villain_is_a_good_match_for_a_tyrant/?AbuI
http://www.mangago.zone/read-manga/the_monster_duchess_and_contract_princess/?WrAq
http://www.mangago.zone/read-manga/wish_to_say_farewell/
thanks y'all!
Bring the love (former knight)
Anything that has a female knight (or a cool/ badass FL) ... So far, I've read:
http://www.mangago.zone/read-manga/setting_sun_dazzled_eyes/ (female knight)
http://www.mangago.zone/read-manga/the_abandoned_empress/?b5eu (female knight in progress, but I have a feeling it's not endgame)
http://www.mangago.zone/read-manga/higeki_no_genkyou_tonaru_saikyou_gedou_rasubosu_joou_wa_tami_no_tame_ni_tsukushimasu/ (not technically a knight but she can use a sword)
http://www.mangago.zone/read-manga/the_lady_and_the_beast/ (past knight, badass though)
http://www.mangago.zone/read-manga/i_ve_become_the_villainous_emperor_of_a_novel/ (er, she's an empress but she's badass)
http://www.mangago.zone/read-manga/irregular_empress/ (cross-dressing knight)
http://www.mangago.zone/read-manga/it_looks_like_i_ve_fallen_into_the_world_of_a_reverse_harem_game/ (technically royalty but she's badass)
http://www.mangago.zone/read-manga/emperor_and_the_female_knight/?Wdse (female knight, the Classic)
http://www.mangago.zone/read-manga/crimson_karma/ (eh, she's pretty cool but it's mediocre)