A good approach shot prepares you for a volley to finish off the point.
It can feel overwhelming as you strategize your approach shot to try and immediately transition into a volley. To break it down, think of it as finishing one shot in order to get to the next one.
As you set up for your approach shot, keep your racket back to prepare for the ball. Hit down the line and follow it in. Split, stay relaxed, and find your grip.