And an X denotes that neither team wins i.e., it's a draw. A 1X bet is a wager that will win if either the home team wins or if the game ends in a draw. By the same token, a 2X wager means that you are betting on either the away team winning or that the game will end in a draw.
Flat betting means betting the same amount on every game (one unit) and only risking 1% to 5% of your bankroll per play, regardless of your confidence level. A good medium is 3% per play. For example, if you're starting with a bankroll ofR$100, you should riskR$3 on every bet.