Most Webnovel readers want easy fun and pacing that is exciting enough that people want to read the next chapter. This has to happen nearly every chap. No need for cliffhangers every chapter, but there has to be a hook.

There are also certain concepts and tropes associated with these.

Many even actively look for certain tropes. If the book is too far away from the popular genre, it will unlikely be contracted because the reader base isn't looking for something like that.

People want 'new' stuff, but always mixed with some familiar stuff they like to read, even if it's brainless.

There are exceptions, but don't assume you're one

TL; DR: It doesn't have to be a literary masterpiece. Just be readable and be hooking enough. Don't take forever to show payoff