Trying to grind plat rn, and I’ve had 3 leavers in my last 6/7 games, is this common in plat or have I just been incredibly unlucky?

As u seen the title im struggling find my perfect agent that fits my playstyle:a character that his kit helps my team and its possible to make aggressive plays and i have experience in all roles and im decent at all of them if u answer I'l...