You'll win but it won't be as significant as the good amount that we usually get from betting with certain matches and high odds. It's like getting something for free and you don't expect to get the best from it.
In betting you bet your amount than you get the reward. In this if you win than you will get your amount.
But free spins are free and in this case you will never get big amount and not sure that the withdraw will be possible or not.
But, that's fun. You get to have free spins and you just have to enjoy them and you won't mind whether you'll win some or lose the entirety.
There are some slot providers like Relax Gaming and Play n Go which the real big wins are only caught during the free spins as they increase the multiplier in an insane way at Relax Gaming when you hit it good up to x100000 and this happen only during the bonus game for example in Money Train 3 slot and also Play n Go which multiplies your bet up to x100 during the free spins of the bonus rounds they have in a variety of slots like Green Knight,Clash of Camelot,Diamonds of the Realm and 15 Crystal Roses.
I have extensive experience playing slots and the best thing to do to win big is to not play slots
.