The computer is running out of Available Empty Space
Further, there appears, there has been outdated software that has been migrated over and over until it has reached this computer running macOS Sequoia
Clean up - There are orphan files that could be removed.
System modifications - There are a large number of system modifications running in the background.
Hardware Information:
iMac (Retina 5K, 27-inch, 2020)
Drives: disk0 - APPLE SSD AP1024N 1.00 TB (Solid State - TRIM: Yes)
Size: 1.00 TB
Free: 103.89 GB
Available: 169.35 GB
From another contributor @etresoft regarding Free Space and Available Space
Free vs available disk space huge differe… - Apple Community
Quote >> “ The "available" storage is the amount of used storage that the operating system could automatically delete if it felt that it was really necessary. The "free" storage is the amount that you can actually use for something.
There are system processes that run in the background and automatically delete some of the "available" storage and convert it to "free". If you completely run out of storage, then those system processes will try a little harder. When you "delete" files you are just hinting to the operating system that you don't need those files anymore. The operating system will eventually remove them, but on its own schedule.
Certain tools will allow you to force the issue and manually clean up some of this storage and manually delete local snapshots. But that is only temporary. " << End Quote