I've seen this question for older versions of the Mac mini, but I'm struggling to find an answer for the Mac mini 2018.

I want to connect 3 identical monitors (22inch 1080p). I'm currently able to connect 2 monitors using HDMI-Thunderbolt 3 cables, but I'm unable to get the 3rd monitor to detect a signal. I have a 3rd HDMI-Thunderbolt 3 cable, and I also have a VGA to HDMI adapter I can use as well.

If I plug the VGA-HDMI cable into he HDMI port on the Mini, the two functioning monitors begin to flicker. The third monitor is still not detecting a signal. 

The monitor is a 1920x1080, 75 Hz

Has anyone successfully configured a 2018 Mac Mini to 3 monitors using one of these configurations?

Thanks!