Handicap in games

Am i the only one who noticed this pattern?

Every game you play is going great, you meet all sort of champions, you duel them, you lose some, you win some, you know where you failed even though you won't admit it to anyone, and then something happens

From a single game where you notice "i don't know why i lost that duel" and from that moment forth, you feel like your power vs some champions just doesn't match, you know that yasuo just doesn't do that much damage, you know talon can't 3 shot you at lv 3, you know that person should had died from that last auto attack

Then you start losing the game,one after another, get aggravated not knowing what happened .

Am i the only one who noticed that pattern?