Responses
I'd say
I wish I Were You Just For One Day
or The Villainess Reverses The Hourglass have strong empowered, strategic, can-stand-on-their-own protagonists.
Give my Isekai Worth Reading list a glance. Everything has a description and some idea of the character types so you'll find it easy to find something you'd like to read.
http://www.mangago.zone/home/mangalist/936135/
٩(๑❛ᴗ❛๑)۶ i've reread this twice and i'm all caught up with the latest chapter. what mangas out there are similar to this one?