Earlier quoted context omitted.
That's because scrollwheels are way too clicky and not scrolly enough. You feel every click, and it is translated to aproximately a three line scroll in the document. It is a very discrete signal, instead of a continuous signal. Touchpads have this right, the scroll is very smooth, and you can scroll by tiny amounts if you want. In a way, it is a limitation of the 25+ years old technology. Why it has not been updated…
Sounds like you need a Logitech MX Master 3 Mouse. The scrollwheel click is software and button controllable (uses an electromagnet I think)
That mouse is very expensive. There are similar smooth scroll wheels on many other, cheaper, Logitech models.