Best heroes for low ranked player

Hey, I started playing Overwatch on PC yesterday and I’m currently high Bronze–low Silver in every role. I’m still pretty new and trying to rank up quickly, so I was wondering which heroes are best to play to rank up fast in each role (Tank, DPS, and Support).

If possible, could you recommend 2–3 heroes per role that are good for climbing in Bronze/Silver and ranking up? Any quick tips would also help. Thanks!