I'm sorry to hear you're having trouble uninstalling Grammarly. It's frustrating when something doesn't work as it should. Try following these steps:
1. Quit Grammarly: You can do this by going to the menu bar at the top of the screen, clicking on the Grammarly icon, and selecting 'Quit Grammarly.' Make sure it's completely closed.
2. If Grammarly is still running in the background, you may need to force quit it. Open "Activity Monitor" from the Utilities folder in Applications, or use Spotlight Search to find it. Search for "Grammarly" in Activity Monitor, select it, then click on the 'X' at the top-left corner to force it to quit.
3. Now, you should be able to drag the Grammarly app to the trash bin, just like uninstalling any other application.
4. Also, remember to remove the Grammarly extension from your web browsers. Each browser has a different process to manage extensions, so make sure to check for each one you've installed Grammarly on.
5. Once you've done all that, empty your trash.
6. Restart your Mac.
This process should remove Grammarly from your Mac.