How to free up memory on MAC?

Question

macOS

Good day.

I have the latest version of macOS. Due to the fact that I have a 128gb ssd, I sometimes experience a lack of disk space. I use a removable ssd. But here's the thing - "Other" started to take 50+ gigs from me.
What is it and how to clean it up? Information about the "Storage" is standard - the "System" tab has these 50+ gigs and it is not active - i.e. it is not possible to clean it by standard methods. CleanMyMac 3 also did everything it could, but didn't get rid of the "Other" one.
What to do? Is there anyone who has experienced this and solved it? Help.

Answer 1

Use DaisyDisk (paid) or DiskWave (free) to find out which folders take up how much space

Answer 2

There are also programs OmniDiskSweeper, Disk Inventory X