Give it sometime and you will get used to it.
See…. Original is original. After market replacements are never 100% perfect & work like originals. Plus/minus in satisfaction is always there.
When you went there, then how many options they gave you for screen & prices. Mind sharing which option you choose among them ?
For screens, sometimes cheaper/economical options works great. And sometimes expensive options doesn’t bring 100% satisfaction.
Since the screen is already changed, so give it some time and soon you will get used to it.