How do i clear my container because I dont know what it is and it taking up my whole storage?

The internal Drive is the smallest capacity drive sold by Apple.

So whatever is on the drive, it will have to be carefully manages.

Applications do use space, so does documents, pictures, music, movies, podcasts and iPhone backups.

What is “Other” storage on a Mac, and how can I clean it out?

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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.