Ctrl+F + what you are looking for
PgUp PgDown plus visual scan
Home, End, arrows (plus potentially control) for pinpointing the exact spot. Shift for block marking.
Ctrl+C (or X), Ctrl+V for moving stuff around.
No reason to touch mouse or learn cryptic shortcuts.
On the other hand, having to constantly hold Control/Alt, including long chords (e.g. with prefix + count), feels much worse for me. I use Emacs keybinds on the terminal (outside of vim), but I can't imagine having to constantly press modifiers. It's not as comfortable as switching to a mode where those actions are explictly first-class.
20g line number
/ find what you are looking for
same for pgup and pgdown
i think what you're describing sounds a bit like visual mode which is just v
d and p for cut and paste if moving stuff around needs to be done (dd for whole line, 5dd for 5 lines, v and then j a few times in visual mode before d or y for yank (copy), etc...)
Note how you don't have to strain your pinky to hit ctrl for any of these?
Note how insanely context-dependent all these are? How it's completely different commands for what is essentially the same operation?
Keys can be remapped (I have CapsLock mapped to Ctrl).
It's just a different modality mine just exists a little closer to where my fingertips chill on the home row