I purchased an Eotech XPS 3.0 about two years ago. I played with it, sighting objects inside the house and found the circle/dot was fuzzy.
After doing some reading I discovered that if your eyes are getting on in years (which mine are) and if you have astigmatism (which I also have!), both can make the display fuzzy. I ended up selling the sight!
Earlier this year I shot a friends AR at the range which had an Eotech on it. This time I was at the range in daylight sighting at 25 - 50 yards. However, although I have eyesight issues, using the optic in daylight aiming at targets further away, the image was much clearer.
I ended up buying another Eotech, an EXPS 3.0 and find I really like it for close range 'plinking'.
If you haven't done so, mount the optic on your gun and try it in natural daylight aiming at a target 25-50 yards away and see if it works for you.
Good luck.