I have a four-year-old Mac mini with 16GB of RAM, but apparently that isn't sufficient to keep Mail, Pages, and Safari in operation simultaneously, or at least "ON" simultaneously? "calculator" was only on long enough to add up the total MBs. What is going on here?
[Re-Titled by Moderator]
Mac mini (M1, 2020)
If a simple reboot of your Mac doesn’t fix things, see if the problem still happens in safe mode.
How to use safe mode on your Mac - Apple Support
Safe mode will often correct weird software behavior by forcing the OS to flush caches, do disk repair and other housekeeping and temporarily disables third-party mods.
Does the same thing happen while in Safe mode?
You can exit safe mode by restarting your Mac normally, then reevaluate the problem.
How much free storage space do you have on your internal drive?
What does your memory pressure graph indicate? Is it in the green?
Error "Your system has run out of application memory" on Mac mini
