Please please pleaseee

There's one but I forgot the name. It's about a stepsister (daughter born from a mistress) who bullies her older half-sister, seduces her sister's fiancé... Only to reveal that she was doing it to save her sister. It's well written.

I'll try to find the name

Found it! https://www.mangago.me/read-manga/proud_to_be_the_villainess_i_m_doomed_after_stealing_my_half_sister_s_fianc_and_having_her_banished/

Proud to be the villainess, I'm doomed after stealing my half sister's fiancé and having her banished


Is the title ヾ(☆▽☆)

Awww that sounds so interesting!! Thank you! Please tell me if u found it

Omg sorry for double reply, mangago is bugging for me and I only saw one reply, thank you!!!!

Here some that you may like, they're all mangas if like webtoons too I can recomment some more:

The Saint Whose Engagement Was Broken When She Became Too Perfect is Sold Off to a Neighboring Kingdom (Banished saint plus fluffy sisters relantionship)
https://www.mangago.me/read-manga/the_saint_whose_engagement_was_broken_when_she_became_too_perfect_is_sold_off_to_a_neighboring_kingdom/

Azamukare Seijo to Shugoryuu no Konyaku (This one have few chapters)
https://www.mangago.me/read-manga/azamukare_seijo_to_shugoryuu_no_konyaku/

Onimotsu to Yobareta Tensei Hime wa, Shoukan Yuusha ni Koi wo Shite Seijo ni Narimashita (Reincarnated princess plus summoned hero)
https://www.mangago.me/read-manga/onimotsu_to_yobareta_tensei_hime_wa_shoukan_yuusha_ni_koi_wo_shite_seijo_ni_narimashita/

LV2 KARA CHEAT DATTA MOTO YUUSHA KOUHO NO MATTARI ISEKAI LIFE (Summoned hero banished 'cause poor stats)
https://www.mangago.me/read-manga/lv2_kara_cheat_datta_moto_yuusha_kouho_no_mattari_isekai_life/

Tsuihou Seijo no Doronko Nouen Seikatsu: Itsunomanika Ringoku wo Sukutte Shimaimashita (not best draws but cute story)
https://www.mangago.me/read-manga/tsuihou_seijo_no_doronko_nouen_seikatsu_itsunomanika_ringoku_wo_sukutte_shimaimashita/

Futago no ane ga miko toshite hikitorarete, watashi wa suterareta kedo tabun watashi ga miko de aru (Girl abandoned by parents that is the Miko)
https://www.mangago.me/read-manga/futago_no_ane_ga_miko_toshite_hikitorarete_watashi_wa_suterareta_kedo_tabun_watashi_ga_miko_de_aru/

Tenisaki wa Kusushi ga Sukunai Sekaideshita (Not saintess but reincarnated girl, good story so far and good art)
https://www.mangago.me/read-manga/tenisaki_wa_kusushi_ga_sukunai_sekaideshita/

The One Within the Villainess (This one is a masterpiece, possesed villainess, possesed heroine, I really like this one)
https://www.mangago.me/read-manga/the_one_within_the_villainess/

Now That I’m Dead, are you Satisfied? (Don't know if you'll like it, but if you like it I read some more of this type)
https://www.mangago.me/read-manga/now_that_i_m_dead_are_you_satisfied/

Thank you so much

Omgggggoshhh!! Thank you!! ε=ε=(ノ≧∇≦)ノ