I don't have enough space

Get an external drive of as fast a type as you want / can afford.

Be sure to be using latest version of Native Access for your OS

Moving a Native Instruments Product to Another Location on Your Computer

Using the Repair / Relocate All Function in Native Access

Reinstalling a Komplete Bundle Without Re-Downloading Kontakt Libraries

For best results, your external drive should be formatted the same as your operating system's native format. These are : Windows ; NTFS , Mac OS X 10.12 and earlier ;HFS+ (Mac OS Extended) . macOS 10.13 and later ; Apple File System(APFS)

Also : general Mac user check list :

ALL NI apps including NTKDaemon must have full disk access. : How to Enable Full Disk Access on mac OS and disks must be of correct format : Notes on Network Drives and Disk Formats

Also then please check that iCloud Private Relay has been turned off : Native Access Error Message: "Download failed" (macOS)

Also then do not use Clean My Mac.

And quote Kymeia : if using Sequoia then N.I. apps must be added to the Local Network