I CAN NOT UPDATE MY MAC TO 12.2 AND IT FAILED ANYTIME I TRIED

Added as last resort - restart on Recovery Mode - Intel ( Command + r ) or Apple Silicon . Choose Reinstall macOS.

This should bring down the latest version and commence the installation without o=touching the Preferences, Application and personal files.

A Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS.  and should be done Before Attempting

Try while in Safe Mode.

How to use safe mode on your Mac - Apple Support

There are factors:

1 - Like poor Wifi connection

2 - Slow wifi connection

3 - Too many other people downloading at the same time and Apple Severs are overloaded

4 - Software on the computer interfering with the download process including AntiVirus Software

5 - Running behind a VPN which may increase Packet losses which may corrupt the download.

6 - If via wifi too many Other devices using the wifi at the same time reducing the Bandwidth to your computer. 

7 - Best Results are via Ethernet Cable to Router

How did it fail updating?

Exactly what happened?

Where in the process did it fail (was was shown on the screen)?

Any error message?