I never told my dad I was the one who crashed his car

Six years ago, when I was seventeen, I took my dad’s car out at night while everyone was asleep. I only wanted to drive around the estate once, to feel grown. I misjudged the gate and scraped the whole left side. I parked it back exactly where it was and went to bed shaking. The next morning he saw it and blamed the night guard. The man lost his job that week and I said nothing. I watched him pack his small bag and leave, and I still remember his face. My dad passed last year. I never told him, and I have never been able to find the guard to apologise. I carry this every single day and I don’t know how to put it down.