Using my finger, or even a pencil, can be difficult when making micro adjustments.
I go up in the right corner and make sure it’s set to free. Then I nudge away, it takes some getting use to.
I do fuck with a lot of lofi off beat type hiphop beats so either I keep the quantize off or I nudge everything off beat a little.
I believe what is being requested here is a button or other more precise control to nudge a selection left or right, because it is cumbersome to finely adjust with a finger or stylus.
If you long press on the spot you want to adjust, you zoom in, which helps me a lot.