Why did US gave that secret to USSR

They didn't, it was espionage. Which is why thieving bolshevist scientists built a reactor with a positive heat coefficient and subpar control rods which lead to a runaway reaction during a routine power down experiment because they had no idea what the fuck they were doing.

Maybe a Stargate isn't a good example because they could use it. Giving Lambo keys to a toddler is more appropriate. We've seen semiconductors for a hundred years before but they didn't understand the mechanism or the applications until postulated in the 30s and material science to do it wasn't around until late 40s at least.

You have no idea on type and history of trasistors tech uses now.

I learned you, vadim. Saying "don't use a phone that tracks you" is like saying "drive a car without wheels". Just, no