not enough startup disk space

Hephzibahd wrote:

How can I get more memory to be able to work on my macbook pro

I get a message not enough startup disk space.

I backed up my mac to an external USB storage with Time Machine

I cleared any files but I still have my music and photos that I have not deleted afraid the time machine didn't get them. I read you can not transfer photos to USB storage if you backed up with time machine because the photo files can be corrupt.

I don't know what to do now.

I don't want to look all my photos.

Empty your Trash — Delete files and folders on Mac - Apple Support

https://support.apple.com/guide/mac-help/delete-files-and-folders-on-mac-mchlp1093/mac

How to free up storage space on your Mac - Apple Support

https://support.apple.com/en-us/HT206996

See used and available storage space on your Mac

https://support.apple.com/guide/system-information/see-available-storage-space-syspf9b375b9/10.14/mac/10.15

User tip: "Other and What Can I Do About It ?"

https://discussions.apple.com/docs/DOC-5142

Try something like OmniDiskSweeper for a GUI to get a good look at itemized file size and location:

OmniDiskSweeper http://www.omnigroup.com/more