If the Optimize Storage option is not enough for your Mac, you can also find and delete junk files and useless cache data hidden on your browser.

Find and Delete Junk Files and Useless Data.

Then, you can delete the unnecessary ones.

Reduce Clutter: Click the Review Files button, and your Mac will sort out all the files.

So, click the Turn On button, and the tool will empty the files in Trash for over 30 days.

Empty Trash Automatically: Some of you may find that the largest files jammed on your Mac are the junk files in the Trash bin.

Click the Manage button, and the Movies & TV shows you have watched and the old attachments in your emails will be deleted.

Optimize Storage: Enabling this function prevents the files from piling up on your Mac.

Store in iCloud: If you have iCloud+, you can store all the files, photos, and messages and delete the local ones to clear the disk space on the Mac for more storage.There are several options: Store in iCloud, Optimize Storage, Empty Trash Automatically, and Reduce Clutter. Then, click the Manage button and see the built-in tools for Mac space optimization. Click the About this Mac option and choose Storage on the new window to see your disk storage status. Removing these from your computer will save a lot of space.After starting your Mac, click the Apple logo on the desktop’s menu bar. If you don't know what the file is or think you might need to eventually, don't delete it. Under 'Reduce Clutter', you can 'Review Files' and delete ones that are no longer necessary. When selected, 'Empty Trash Automatically' will delete Trash files after 30 days. When selected, only your most recent email attachments will get stored locally. When activated, your Mac will automatically remove Apple TV movies, and TV shows that you've already watched. Next, select the button under 'Optimize Storage'. Recent files and optimized photos will remain on your Mac for easy (and offline) retrieval, as necessary. When checked, these options will automatically store those folders and files on iCloud instead of locally, thereby saving space. Consider checking the boxes for 'Desktop and Documents' and 'Photos'. First, choose the 'Store in iCloud' button under the aptly named 'Store in iCloud' section.

How to clear disc space on a mac