Reincarnation/ another world || Shoujo

I really liked the novel!
Mc gets reincarnated as a princess. She tries to get the flags out of her way. She fell in love with a supportive character, the knight captain.

This one is a gem! I tell y'all.
Mcs engagement is broken and she remembers her past life and that this is a game world.
She barley escapes a flag and decides to find a new husband, the demon king.
If I write more it would be too many spoilers, so definitely give this a read. I couldn't get enough after the second chapter.

Mc gets send back in time to the sengoku period.

Mc married ML so that he pays her Family's debt. ML has a girlfriend he can't marry because of her background but doesn't want to part with her, to get his parents of his back he marries our Mc.
Novel: https://www.novelupdates.com/series/can-someone-please-explain-this-situation/