Confusion about RAM usage in Mac mini

As user hcsitas posted, your Mac needs no third-party junk to run efficiently.

That Memory Dialog graphic has pretty colors, but the Mac already has its own Activity Monitor application that will display exactly the same info.

Check if your Mac needs more RAM in Activity Monitor - Apple Support

To my eye, the developer of your utility unwisely chose to use red as the color for the Application memory usage. We humans tend to associate big red lights with TROUBLE! But in reality what you see there is just normal RAM usage.

It is not unusual for the Mac to use most of the RAM it has for normal everyday proper operation. That's faster than moving data back and forth to the ssd (swap). As long as the memory pressure remains low and in the green – as indicated in Activity Monitor – then you're golden and have no cause to be concerned.

Uninstall it ASAP - junkware and possibly malware. In general, shun any and all 3rd party apps that claim to monitor/protect/measure/poke around/improve your system - unnecessary and possibly damaging. If you have any more of such apps, uninstall them too.

Your Mac is behaving normally.

They are designed to use most of the RAM even when idling. This leads to the uninitiated fearing they need more RAM. You can double or treble it and you will still see the same behaviour as that's the way it's designed to be.

So don't worry.

As hcsitas says, these third party apps are designed to play on people's fears and insecurities and make money for the developers!

It won't do any harm but it is completely unnecessary.