how can I increase the capacity of my Mac? cause there's not enough room for the new update file

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The final word from Apple on Managing the " Other " Category

• Other: Contains files that don’t fall into the categories listed here. This category primarily includes files and data used by the system, such as log files, caches, VM files, and other runtime system resources. Also included are temporary files, fonts, app support files, and plug-ins. You can't manage the contents of this category. The contents are managed by macOS, and the category varies in size depending on the current state of your Mac.

Harmon_Zhu Said:

"how can I increase the capacity of my Mac? cause there's not enough room for the new update file"

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Increase by Clearing Files:

You need to clear items, manually. Export them to an external drive. Also, delete large files (i.e. Movies and TV Shows, and Virtual Machines), which can take of GBs of data.