Will replacing the screen fix all display issues?

My old iPhone 8 has numerous screen/display issues due to what I believe to be drop excessive drop damage. It has multiple long cracks through the screen and the bottom corners are shattered and chipping.

I upgraded recently and was going to sell this old phone for parts, but realized I could sell or gift it if I repaired it. I know that replacing the screen with ifixit parts would repair the cracks and chipping, but I’m wondering if the display issues mean that there are other parts of the phone not doing well and the internal damage would persist even through a screen repair. If this was the case I’d rather not go through the hassle.

The display issues are:

• a thin black bar on the right side of the screen,
• LCD bleed in the bottom right corner,
• twitchy/erratic scanlines that bring dark spots and alternate between horizontal/vertical,
• two hortizontal white lines one near the bottom the screen and one at the top
• And the screen seems to be perptually dimmed

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I’ll add photos showing all these problems but some may be hard in still images to show the flickering. Otherwise everything else in the phone seems to function well like the lock/volume buttons, home button + touch id, camera/audio is fine.

Please let me know if you know anything, thanks.