There are two benefits to buying ML accounts, depending on which type of account you like. A more advanced profile allows you to save time and energy because it already has more coins, heroes, skins, and stats to begin with.
You are also more likely to play alongside better players, making your game more entertaining and competitive.
However, if you choose to buy a smurf account, it will let you match against less advanced players, which makes the games easier. This is suitable for those who seeks to improve their skills and build a better match history.