to be better, learn from your mistakes. At dapat di mo na maulit mga mistakes mo
Tas gawin mo ang gustong ipagawa sayo ng team mo. Alamin mo roles mo, tas kung magpi-pick ka ng hero, dapat compatible siya sa team mo tas may advantage against sa kalaban.
And most importantly, wag magpapadala sa ego. 5v5 yan, di yan parang PUBG or counter strike. Yung panalo nagdedepende sa laro ng team.
If you wanna be better, try to watch winning games from your bracket and compare it to your replays. Sometimes it just takes a few tweaks to your play style to actually earn more mmr. I know this is somewhat a generic advice but it actually works.