Can I use my Late 2015 iMac as external display connected to new Mac Mini?

No, you cannot connect the 2015 iMac to the new Mac mini and use it as a display.

The iMac is designed to be a computer, not a monitor.

The configuration is not supported by Apple.

I got a late 2009 IMac, I’ve been trying to connect it as a display with my Mac mini, I’m not sure to succeed.

Can I use a Dell monitor, Samsung or Xiaomi as display for my new Mac Mini?