The app I use to do that is literally called AppCleaner, been using it for years it’s one of the first things I install.
For example, the other day I moved Word to the trash, 5 seconds later I get the AppCleaner pop up letting me know it found an additional 2GB of shit that Word just littered around my machine that wouldn’t have gotten removed by just deleting the app. And unfortunately, that definitely hasn’t even been the worst offender I’ve run into, and at this point I’m very rarely not surprised by the amount of leftover crap that doesn’t get removed when deleting an app.
For example, the other day I moved Word to the trash, 5 seconds later I get the AppCleaner pop up letting me know it found an additional 2GB of shit that Word just littered around my machine that wouldn’t have gotten removed by just deleting the app. And unfortunately, that definitely hasn’t even been the worst offender I’ve run into, and at this point I’m very rarely not surprised by the amount of leftover crap that doesn’t get removed when deleting an app.