i am on my knees

You'll find them in these lists~
1. https://www.mangago.zone/home/mangalist/2412631/
2. https://www.mangago.zone/home/mangalist/2507320/

i gotchu

https://www.mangago.zone/read-manga/empress_of_another_world/ (ordinary girl isekai'd into a fantasy land, she becomes the empress to help the emperor defeat his evil mother)

https://www.mangago.zone/read-manga/doctor_elise/ (doctor elrise!! a very popular royalty isekai, mc is a doctor isekai'd into a 'villainess' type lady)

https://www.mangago.zone/read-manga/crimson_karma/ (emotionless battle machine dies and isekais in the middle of a war in another land, romance is subplot tho)

https://www.mangago.zone/read-manga/your_majesty_please_don_t_kill_me_again/ (regression instead of isekai, mc regresses back in time to stop her family from dying)

https://www.mangago.zone/read-manga/i_will_change_the_genre/ (more like dukedom instead of straight royalty, but mc isekais in the body of the villain aunt)

hope u found something to enjoy!! :3