Seeing lots of male MC isekai or manga written for a mostly male audience, but I'd like to recommend some isekai with female MCs as well! A lot of shoujo isekai can be pretty predictable, but some really subvert or have an interesting take on "overused" tropes. It's pretty important to see a wide variety of tropes and uses of tropes to really feel out what works and what doesn't. Knowing what you
DON'T want to read is essential to writing.
1. Ascendance of a Bookworm ~I'll do anything to become a librarian~ Part 1
https://mangadex.org/title/18488/ho...remasen-dai-1-bu-hon-ga-nai-nara-tsukureba-ii
VERY interesting take on isekai!
A young woman is killed during an earthquake and wakes up in another world in the body of a very sickly girl from a poor family. She finds that the world has low literacy rates and books are almost nonexistent, so she sets about the process of making her own books.
I
really recommend reading this to see how the author builds the world (there's a magic system and it's wonderfully built into the world), describes language, and goes really in-depth into the mercantile system (since the girl essentially trains to become a merchant). Also, there's isn't really any romance since she's a little girl.
2. Middle-Aged Man's Noble Daughter Reincarnation
https://mangadex.org/title/43291/middle-aged-man-s-noble-daughter-reincarnation
Exactly what the title says.
Hilarious use of the "villainous" lady character. No real world/story building, but super funny characters and jokes. Even if you're not writing comedy, I still recommend checking this one out for some laughs.
3. Emperor And The Female Knight
https://mangadex.org/title/42278/emperor-and-the-female-knight
Not an isekai, but has pretty good world/story building and depictions of war/soldier life. The story is that a noble girl is essentially given away to war (and to preferably die) so her younger sister can inherit the family's estate. She, instead, becomes a great soldier even though she isn't respected because she's a woman. Not very flowery since the MC isn't classically pretty. Some romance.
4. May I Please Ask You Just One Last Thing?
https://mangadex.org/title/38088/may-i-please-ask-you-just-one-last-thing
Also not an isekai. You ever think: "Man these guys are jerks, she should just punch them and be done with it". Well, here's the story for you. MC literally beats the shit out of everyone who wrongs her. Kinda violent, but pretty great subversion of typical the "villainess" trope. Some romance.
5. Kanata Kara
https://mangadex.org/title/1858/kanata-kara
My personal favorite isekai. One of my top overall mangas. This manga is
SO GOOD. I wish it got more love because it's amazing and has a little bit of everything: romance, politics, action, suspense. The world building and character development is so amazing. Language acquisition is touched on in the beginning. Someone can definitely describe this manga as "trope-y", but I'd say that this manga does tropes
correctly. Unfortunately you can't read it on this site, but I
highly recommend finding it and checking it out.
Tropes are literary devices. There are no "good" or "bad" ones, just different uses and personal preferences. Even "overused" tropes work out really well if the author uses them correctly. Play around and experiment with them. All I can say is don't throw away perfectly good devices for the sake of "being different" or "original".
There are no original stories. Everything has been done/written/talked about before. Just have fun. Read what you want to read and write what makes you satisfied/happy.
Good luck!