display resolution

I have a Samsung wide screen monitor that worked with 2017 MacBook Air with intel running latest OS on beta that's available - Monterrey 12.7.4 - until I download software to share with a government entity. After removing that share screen software, I can no longer get a resolution about 1920x1080, which results in my monitor display looking stretched. I've reinstalled OS three times, set to monitor to defaults two times, and still nothing.

How do I add resolution size about 1920-x1080?

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display resolution
 
 
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