@usedtobeafan I have a LENOVO laptop, and this fixed my issue definitely.
It works not only for Snagit, but also for Snipping tool....
I did first look at this solution, but it didn't help me:
https://support.techsmith.com/hc/en-us/articles/360027625811-Snagit-Windows-Yellow-Tint-in-Captures-from-f-lux