Everyone reacts differently to different pills so it’s very much a matter of trial and error to see what works for you personally.
It is pretty much impossible to find a pill that will give you a specific side effect that will change something for you, like changing your appetite in the way you want or increasing breast size. Those “positive” side effects are often temporary anyway.
If you have little or no unwanted side effects on your current pill then in my opinion you’re best to just stick with it, as the chances of getting unwanted side effects on another pill are pretty likely.