Factory sights, how do you do it?

Let me start by saying I'm kind of new to all of this and read what I can.

I got my first 1022 about 3 weeks ago.
It's a takedown.

I'm 64 years old, so when I got my first handgun last year I was told that I must see the front sight on the handgun clearly and I found that to be true. Even when the front sight is clear, I can still see the rear sight on the handgun, and the target well enough to hit it once in awhile.
I'll ad that I used a pair of these to accomplish all of the above because of old age and astigmatism.
---> https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

So now I have about 250 rounds through my 1022 and I'm having some trouble seeing and using the factory iron sights.

I turned the rear sight around so it's all black now, and put a white dot on the front brass colored sight and those two things seemed to help a little.
The solid black gives me something to focus on with the white front sight.

The rear sight is where I'm having trouble.
It's blurry to the point that I cannot for the life of me get a sense of where I am left or right now.

So my pressing questions are,

Where are you guys looking, and what's clear and what's not clear?

Is it just me, or is there a better sight system for the 1022?
I know nothing about scopes and was hoping not to go there, but I understand it's
an option.

Lastly, since in my mind in a tactical situation in my home I would be using two eyes, that's how I try to shoot everything.
Is that wrong while at the range with a rifle just plinking at some random targets?

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