Would you write a book the way you want selling zero copies or write a book the way you don’t to try to meet readers’ taste?

That’s not the choice. Here’s the choice:

A) Write the book exactly as you want to write it, and market it effectively enough that a reasonable number of readers whose taste in books matches yours find out it exists and buy it.

A prime) Same as (A), but fail to market the book at all and then fret because readers aren’t buying your book.

B) Write a book that you think might have broad appeal and hope you’re good enough at understanding “appeal” and a good enough writer that you can pull this off. If you can, then traditional publishing is probably the best path for you.

B prime) Same as (B), but self-publish, don’t do any marketing, and then wonder why readers haven’t noticed your book exists.

C) Write an unreadably terrible book; then declare that readers ought to love your deathless prose and it’s their fault your book is unappreciated.

There are lots of readers in the world. A reasonable number of readers like whatever sub-sub-subgenre you happen to want to write. A surprising number of readers are apparently interested in reading horribly written dinosaur adult stories … sorry, not sure what Quora’s algorithms will let me type … but I trust you can figure out what I mean. That’s why Chuck Tingle can apparently sell enough stories to make writing them financially worthwhile.

Therefore, you can write anything you want, because “readers’ tastes” are astoundingly broad.

If you don’t do any promotion, readers will of course not know your book exists. That’s not an indictment of your book.

However, if your book is unreadably terrible, then no one will buy it. In that situation, there’s no choice but to sell zero copies unless or until you improve your writing skill.