A lot of League of Legends games are lost before the loading screen ends. Expectations are unclear, communication is delayed, and the team mood is already fragile. Learning how to play better as a team in LoL usually starts with a few consistent habits, the kind that make duos and flex stacks easier to run week after week.
The most common source of team friction in LoL is not a bad game. It is a session launched without a shared objective. When some players want to win at all costs and others are testing a new champion in ranked, tension arrives before the first drake. Setting the tone in thirty seconds (serious ranked, flex practice, or casual play) cuts more friction than most mechanical improvements.