I played a game of ranked where 1 of my teammates was trolling/nading us which caused my other 2 teammates to leave. Why am I still getting deducted rank rating over that shit?

I’ve only been playing valorant for around 3 weeks, but I only soloq’d and my self esteem game wise was pretty low. My whole play style was really passive and I’d panic shoot every time I saw someone because I was afraid of letting the team...