Hello computersandbananas,
For help with connecting a second display, check the information below found in the article here: If your external display is dark or low resolution
"Check connections
Make sure that your display's power cable and video cable are connected securely and correctly at both ends. Learn more about how to connect a display to your Mac.
If you're using an adapter with your video cable, the adapter must support your display's resolution and refresh rate. Thunderbolt and USB-C adapters must also be compliant with DisplayPort Alt Mode, Thunderbolt 3, or Thunderbolt 4. If you're not sure about your adapter, try a different adapter or replace the video cable with one that doesn't require an adapter.
If the display is connected to a Mac laptop computer with a closed lid, make sure that the Mac is connected to power and using an external keyboard and mouse."
You can also view the section "Configure display settings" here for more helpful information: Connect a display to your Mac
As the screenshot provided doesn't appear to be blurry, be sure to check your connections and the display's documentation for any alternate options on resolution configuration. Change your Mac display’s resolution
Best.
