sur ta gauche, sur votre gauche
to turn left is 'tourner à gauche' in French.
"à gauche"
tourner à gauche
"I left" in French is "je suis parti" for males and "je suis partie" for females.
"Left home" in French is translated as "parti de la maison."
You can say "Je veux être laissé(e) tranquille" in French to mean "I want to be left alone."
I am left-handed is "Je suis gaucher / gauchère" in French. I am right-handed is "je suis droitier / droitière". These adjectives are modelled after the nouns "gauche" and "droite".
It depends what you want to say. For example, if you want to say there's three weeks left before Christmas, say "Il reste trois semaines"
to turn is "tourner" in French. "tournez à gauche, tournez à droite"
Peggy as a diminutive of Margaret would be spelled Margaux in French (it is likely to simply be left as 'Peggy')
"the right (river) bank" is "la rive droite" in French. ("rive gauche" for "left bank")
Left can be translated as "gauche", and right as "droite".