If the house edge of a slot is 3%, that makes the RTP 97%, so betting $100, you can expect a return of $97. This can be expressed with the return to player (RTP) percentage.
The house edge is how much the house is expected to win across thousands of games. We recommend playing Vegas slots with an RTP of 95% or higher to increase your chances of winning.
However, you can often win or lose far more or less than that percentage in a single play session. However, there are certain approaches that could help you win more overall: