It is not crazy at all. I have seen people having even crazier red streak (and even better green streak) when gambling with 1.5x payout. It is just that rng isn't favoring you. People tend to think the more reds they start getting, the better the chance of not hitting a red on the next bet. This isn't true. You might even see a 100x red in a row (but extremely likely to happen) since all bets are an independent event. The next bet no way depends on your previous bet and has the same chance of winning or losing.
Due this sort of believes, people tend to keep on increasing bet size amount after a loss thinking that they next bet has higher chance of winning.