Aww, damn there's a lot actually, but unfortunately I can't remember the titles at all except these for now
https://www.mangago.zone/read-manga/nirameba_koi/
https://www.mangago.zone/read-manga/yuusha_in_maou_n_chi/
If you mean mc that has a scary face but is actually super cute and sweet, then here are some recs Both sl and bl~ More sl though hope thats ok!
https://www.mangago.zone/read-manga/beast_master/
https://www.mangago.zone/read-manga/kawaii_hito_saitou_ken/
https://www.mangago.zone/read-manga/harapeko_usagi_to_koisuru_ookami/
https://www.mangago.zone/read-manga/toorigakari_ni_one_point_advice_shiteiku_type_no_yankee/
https://www.mangago.zone/read-manga/the_fragrant_flower_blooms_with_dignity/
https://www.mangago.zone/read-manga/kimi_ni_koishitei_desu_ka/
https://www.mangago.zone/read-manga/natsume_to_natsume/
https://www.mangago.zone/read-manga/kimi_ni_todoke/
https://www.mangago.zone/read-manga/yamaguchi_kun_wa_warukunai/
https://www.mangago.zone/read-manga/kowamote_kokosei_to_jimikosan/
https://www.mangago.zone/read-manga/gokushufudou_the_way_of_the_house_husband/
https://www.mangago.zone/read-manga/kaibutsu_san_ni_rei/
https://www.mangago.zone/read-manga/kumicho_musume_to_sewagakari/
https://www.mangago.zone/read-manga/honey_come_honey/
I don't know how common this trope is but can you guys recommend mangas/hwas where the main love interest have the meanest most bitchy face but is actually the shyest kindest fucking angel you've ever seen