Give it time.
Glocks tend to feel much different than any other pistol as you've found out. They're blocky, and slanted a little bit more. You'll get used to it eventually but the question is do you WANT to get used it? If you shoot well with it, keep it and it'll begin to feel familiar. If you shoot terribly with it, your hand will *still* get used to the feel of it after you keep shooting it.
So by my standards, the proof would be in the groups. Are you able to get good groups with it? Slow fire? A little faster? Able to shoot it one handed? These things would take practice and experimentation with trigger placement, perhaps a different set of sights since stock Glock sights are... usually not optimal for most people.
Hand fit: I don't think we know if this firearm fits the OP's hand.
"position hand weird to reach the trigger somewhat properly" - since you're used to revolvers, just want to make sure you don't feel the need to reach the trigger with the crease of the index finger. Just anywhere along the pad and you can fine tune it for accuracy or a straight back trigger pull. You've got a high grip on the frame?
Too large: One way that helps me decide if a handgun is too large for my hand is if I can't reach the slide release without shifting grip, shooting one handed is impossible, or i'm expending excessive amount of hand strength to hold on the firearm. If I relax my fingers a little bit, will the handgun still sit in my hand? Typically if the trigger guard can rest anywhere on the middle segment of your middle finger I would call it good to go.
Grip texture: The checkering/texture is sharp. I had to get used to that on a Gen 4 Glock 34, Kahr CM9, and the backstrap of a 1911. You'll run in to that everywhere and inside a week your skin will thicken if you continue to grip it hard every now and then. That sensation will disappear. People actually pay extra money for that with aftermarket services "stippling" so that's a good thing!
What "feels best" may not always be best for your accuracy, concealment or speed. For example, a nice soft rubbery wraparound grip on your Glock would hide the texture but it may be sticky enough to snag your T-shirt when you're concealing. A smooth grip would be nice on the hands but you'd have to re-grip the gun after every shot (I've seen it before). A grip that's too slim makes it hard to really grip it hard since you've got more floppy fingers coming together than frame to grip on.
I'd keep at it for now. If your fundamentals are in order and you find you just plain shoot terrible with it and have exhausted the above even after a class or two then sure. But Glocks are typically great shooters, one of the more customizable and supported guns out there. Another reason to keep it is being a Glock, they keep their value well and should you REALLY need to sell it, a difference in a few years of age won't change the sale value.
By the way if your sights don't move when you pull the trigger you're onto something good. Tell your wife you love your holster and your gun, ENCOURAGE THAT BEHAVIOR! lol
For example, 5 years ago I rented a Glock 26 and an M&P40c at a range. I shot the G26 very well - 1 inch ragged hole at 7 yards. But I had read so much about the M&P40c and 40 caliber in general that I just had to have it. The Glock 26 felt terrible in my hand. The M&P40c felt better, smoother, rounded grip, interchangeable back straps etc, I wanted to try the new big thing. Now I shoot the M&P just fine but I could've done that from the get go. I could have gotten used to the G26 and it's weird hump back. The more you shoot the better at shooting you'll be in general so you can adapt from one shape to the next by focusing on fundamentals.
