Good job! I guess some of the streamer's luck became your own.
I don't do such things but I understand how watching a streamer win can make you feel more confident and push you to try it out yourself. That's why all these companies that sell stuff have sponsored streamers and youtubers who make content for them starting with food producers sponsoring cooks, supplement makers sponsoring bodybuilders, shoe brands sponsoring soccer players and so on.
People think that by wearing a brand they'll look more professional and play better.
That is true, of course, that's the reason why these streamers are being paid by these sites.
To create the feeling of being a winner as well. But we all know that luck is all you need on this type of game.
The OP is just lucky to hit his winnings. But people should remember that one's luck won't be their luck as well.