The dose makes the poison

It's not necessary to find 0%. If it is within a safe range, our body's detox and those phytochemicals/phytonutrients can help neutralize its effect. There is no perfect food anywhere, and we don't have to have perfect food.

Make those changes you can, accept those not in your power to change, and be optimistic and enjoy your good health.

I personally think avoiding high heat and deep frying will have bigger positive impact than just agonizing over which oil to use.