There are different ways to practice.
At my stage, every round is still practice for me, whether it is ranked or practice mode. I am still trying to learn.
You can set the conditions for your practice round and you can take mulligans over and over trying to master different shots during the round. You can put yourself most anywhere on a hole - bunker, rough, etc. - at various distances from the green to work on approach shots. You can do these in practice mode - but not ranked mode.
Playing a ranked round has the advantage of increasing the RR count so you move closer to the next tier (if that is your goal) and you can still learn on the shots you take. And you might win a few credits, to boot!
Either way, I make notes of what works on each hole for future reference.