Have you tried turning your screen vertical, if it supports that? Way underrated. Instead of useless side space that would make lines too long to read if it was used, you get useful vertical space to display more of a document at once.
In a traditional floating setup I would have multiple smaller overlapping windows wherever I want them.
Whereas with a tiled/scrolling layout, windows can end up way too big to be useful. It's fine on a laptop though.
I initially used Niri on a laptop and thought it seemed great. Then plugged in my large monitor and realised it was awful there!