I am gonna try learn 1 agent better and rank up with it.
Jett and clove. The key is not really the agent choices but dont undervalue ur life and taking a free 50/50 1v1. Instead, bait ur teammate and only go for straight 1v1 if u have an advantage (play around team util or using stuff like iso shield or jett knives/op). Jett is the agent for solo queue cus u can learn how to take a timing and get out with her dash (mostly a free pick)
statistically clove
https://www.vstats.gg
but imo clove teaches you bad habits, I'd go for Omen, Sova or Cypher if you want a deeper understanding of the game