I need help finding this

Please smb help me I am trying to find this manga/manhwa that's historical, typical reincarnated story, but the mc wants to go back, and is a little depressed, and no it's not kill the villainess, she does have black hair or a dark hair color, but I don't remember much, but I read this back in lock down, so I didn't have a acc back then, but the ml makes her go outside and exercise since she's always inside sleeping and just being lazy because she wants to go back, I think the ml is a kight or something, but that's pretty much it but please help me it was so good I need to find it