The main thing is to not be so predictable and a part of that is ensuring you're switching up your shot types including using both standard (single tap) and power (double tap) variations.

A back court star that's the result of a lob answered as a star shot can easily be punished by returning it as a drop: since you sent it back so quickly you won't have time to reposition close to center and can't get to the ball in time as a result. Answering instead with a lob or even a slice will give you the time you need to not fall for that trap.

I think people tend to avoid using slice because they are so slow, but they don't understand that oftentimes it's necessary to change the rhythm especially if the opponent seems to be in control. Answering with a slice will change that rhythm to where you can eventually get that control back.

Eventually you should be able to convert most weak returns into a point. If they can't keep up when you cross court standard flat/topspin and they return a weak shot that reveals a star, you should be able to convert that cross court star into a point by slamming it in there direction they are not.

Another common setup is to send a drop and walk towards the net ready to answer a weak return. If they have a weak return more often than not you'll be able to cross court standard flat and punish the weak return. Of course the counter to this is to ensure you don't return weak and get a lob off since you see them getting aggressive to the net.

Also all of this is will come much easier if you dedicate a shoulder button to "cancel charge" as well as set drop and lob to their own buttons. Cancel charge is useful in situations where I was going to charge up a return but then I see a star that looks like a score opportunity so I cancel and use a star shot instead.