Rank up and get better at the game with a good team!

I am a Sage main, but I usually fill so I can play Omen, Skye, Fade, or Reyna pretty well! I want to be able to get better with the other agents, but those are my most confident agents to play in competitive. I peaked gold 1 but this current season there were a lot of losses and I'm playing in low silver and high bronze lobbies. I'm looking for a low elo team where I can learn to strategize with my teammates. Despite playing Sage, I am usually the one who enters the site first because my duelists usually never enter and make first contact. I utilize grim walls on occasion but usually like to save wall for post plant or to slow the enemy team from entering.