I have tons of product from meguiars everything from waxes, polishes, running compound, scratch x, swirl x, etc. But I can't get the haze to go away and for some reason when I try to use a polish or running compound it makes it worse. the only thing that masks the hazy look is waxing over it. I wash the car and dry it.... what is the process to polish or use rubbing compound by hand? how much compound do I apply per section? should the cloth be dry or damp when I apply? how much pressure and for how long do I rub in the compound? I have tried to watch videos online and get tips, and they make it seem so easy, but I can't seem to get it. paint is only 4 years old, but I live in a really severe climate.

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1990 190E 3.0L

I am guessing you mean a haze on the paint? That is usually the signs of a failed clear coat. Cheap clear coats cannot stand up to the exposure of the sun forever.

remove the "cheap" to make the statement correct.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

anyway to get rid of haze or do I repaint? if I need to have another clear coat applied, I'm just gonna have entire car repainted

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1990 190E 3.0L

If the clear is oxidized below the topmost surface layer then the only answer is; sand, seal and re-coat.

Post up a picture of the trouble area and maybe we can give a better answer.

One thing I can tell you is that if the problem is the most obvious on the flat horizontal surfaces and not on the sides then the clear coat is shot.

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now