!. appearance & display set for no.6
Why did you set at #6? You're complaining about text being too small to read but you choose the smallest size available. Doesn't make sense.
2.under display again set resolution at 1920-1080
I'm guessing that is the highest setting. Is that right? That's a high resolution on a laptop, meaning text is going to appear smaller than on lower resolution screens. So, increasing the size setting to offset the effect of high resolution seems like the logical thing to do in your situation.
3.under display again set custom scaling level 100%
Maybe I could try 200%?
Hmm, my laptop only shows 125% as the maximum scaling. But, my resolution is 1366 x 768, so I would not need to scale as much as you to get a the same visual size effect. If your system allows scaling up to 200%, and presumably some options between 100% and 200%, why not experiment with the setting and see how it goes?