Same with parlays, it's risky. But you can win loads of amount if you know your game. Recently, I made one and I got one mistake only out of 7 players that I predicted with their points and rebounds in basketball. Some of them are just 1 point difference win while the last one where I made a mistake didn't even receive any rebounds where I needed 2 of them.
Here is the bet ticket for that.
Like I said, if you know your game then it could really be profitable for you. If I didn't input that last bet there, it's still x26 and I regret that I did it because it was my greed talking to me to add one more and maximize the betbuilder.
Other gamblers do try to minimize the risk by just controlling it to the x3 - x4 range while others go way far down to just x1.5 - x2.00 but with a high chance to win the bet.