My Mac won't update to later software versions
I have a:
iMac (Retina 5K, 27-inch, Late 2015)
Processor 4K GHz Quad-Core Intel i7
Memory 16 GB 1867 MHz DDR3
Graphics AMD Radeon R9 M395X 4 GB
The operating system:
macOS Monterey
Version 12.7.1
If I click Software Update... there is no update, there is nothing wrong with this computer its as fast today as the day I purchased it, however I want to continue to use this computer and now I find that I cannot update it to later software versions, this is not only a problem for macOS, but other software I use, I cannot install the MySQL Workbench as it will not run on the older OS.
Why? Can this be fixed ?
[Re-Titled by Moderator]
iMac 27″, macOS 12.7