Again, what do you do if you see high radiation levels? You just pack up and leave on the spot? Where to? How do you know that the place you're moving to isn't

Again, what do you do if you see high radiation levels? You just pack up and leave on the spot? Where to? How do you know that the place you're moving to isn't also affected by the same levels of radiations? Communication by the powers that be is the key element here, this shouldn't be put on us, civilians. Yes, I was also a kid back in April 1986 living in a country bordering present-day Ukraine (in Romania), and as destiny had it a close childhood friend of mine died of leukemia in the spring of 1990 and I know directly of at least another kid that died of the same cause in the late '80s.