No you are wrong, you have obviously more chances to get at least one tail by tossing several times a coin than by tossing it one single time.
You have 1/2 chances(50%) to get a Tail when you flip a coin one time :
~snip~
Obviously there is more chance to get bigger prize from large number of WOF spins but this is just probability not guaranteed. I have made more than 83k bets in multiply game and claimed 17k+ hourly faucet. But I got the lucky number 10,000 only one time and it was during multiply game. Where many people get the top number within few rolls. So, I also think that the outcomes are random but it is fully luck based. Nothing can be changed in the outcome of WOF games by learning the odds.