That's pretty big tho? like you've hit majority of the parlay? That's pure luck and good analysis of what will happen in the series.
In my experience, the highest are just 4x, I don't risk too much just betting on what I feel is sure based on my analysis, well it's gamble too since maybe I lack that valuable information that might give me more chance to win but yeah, that's all I've reached. Well, I bet big too, like around $50-100 but the category is what I always play (e-sports betting) so I'm very familiar and confident where I throw my money.