how many lucky Pokémon I’ve ever owned ?

This is my current situation The last two days I had following trades: ▫️My Magnezone (magneton caught in 2016) vs Mewtwo (player had no lucky dex unlocked so far) ▫️my slowking (flegmon caught in 2016) Vs apex Lugia (other player had definitely over 25 aged-based-guaranteed trades) BOTH TRADES DID NOT TURNED OUT TO BE LUCKY So far , if I’m counting right I had 15 out of 25 guaranteed lucky trades Before you start counting : -Deino was a random trade -I evolved one Cosmog So why these trades weren’t lucky ?