Against the Metagame

Your definition of metagame is flawed.

A meta game is a game that emerges from a game once optimal playstyles have been discovered(or at the very least claimed to be discovered). It is the game of playing the game.

Something that has a higher than average win rate usually also has counters, and there can be ways to shift a game into an area where those counters become more relevant than in the average game and that play style goes down in viability.

Reading up is pretty much the only way to learn a metagame for anybody who values their time and wants to do more than just play with friends. If you either have lots of free time or only want to play with friends then just playing is the better route.

Developers don't (usually) intentionally put in one cheap playstyle that wins against everything. That's why balance changes are usually quite common, to make sure the meta changes and adapts