It also sounds like you don't have relative line numbers enabled, which makes highlighting or jumping some number of lines quickly pretty trivial: https://jeffkreeftmeijer.com/vim-number/

A Vim truism: if what you're doing requires too many keystrokes or otherwise seems cumbersome, there's another way to do it that faster and requires fewer keystrokes.

It's just a matter of whether you're interested in learning and not assuming you have it all figured out.