MacOS itself is a good uninstaller as we know. But sometimes it can be slower or can be cluttered with virus and malware and that’s why it may not be able to perform the action like uninstalling and other do so. Then the third party software like optimization and cleaner software takes place who works independently and with the use of them you can declutter your mac and uninstall any app which you want to do. These optimization software are also used to optimize your mac daily and they protects your mac from malware and virus. There are many mac optimizer software available on the internet. Some of them are paid and some are free to use. I recommend you to use mac optimizer.