A streamer always gets the Jackpot in his game because it is indeed to attract the attention of everyone watching so they want to play and make deposits.
I am curious how do they hit the jackpot in their game. It's impossible to manipulate the game. If a casino can select players who will win a jackpot and who won't win a jackpot, then this is not fair. I don't think casinos can do this. Better to say that I don't know if it's possible. If so, I don't know which providers allow casinos to do such things. If they are doing something like this, that's a serious problem.
Trying to gamble on your own without depending on other people would be better, choose a trusted gambling platform. Use a minimum of money to gamble, so there are no painful defeats and it's easy to stop. Winning a slot before 100 spins is the first indication to stop immediately or will lose everything if you continue.
Indeed, you are right. But how many gamblers follow that? Most of us continue to play with the hope that we will win another jackpot or big wins. That's because most of the new gamblers come from watching big wins from streamers and content creators. Now casinos are also active on social media with some video ads. New gamblers choose those platforms by watching those videos.