I can say, that's normal. Yesterday, i saw on other popular crash game site, it has 12 streak losses under 2x multipler. If you think 14 losses aren't normal, that site will bankrupt since you only need bankroll which can cover your losses 14 times in a row. Each hash also unique, you can't say it's not normal too since no one knows what's the next result from each next hash.
The only thing I really not test on crash is when it is on automatic mode and martingale because I feel like this kind of thing do happens as well as on dice. I think that's normal but for someone who are new and experience betting on it with high multiplier will really freak out especially if they are huge bettor. Moreover, as I recall I only experience around 9 or 10 lose streak in the history of my betting and yeah might be too much to handle a 14 red streak on a crash game.
From everything that is played in the Crash game, of course, losing streak will experience it, but I am a little hot if you lose and want to increase the bet to 2x-3x to cover the defeat, but yes it's very difficult for us to do especially by playing automatically or martingale for I was tough and I've experienced things that hit me in the streak.
But we realize that maybe the streak will not happen with over 10x enough for me 3-4x defeats and we have to know how to crash play while still not playing rockets too high it makes the heart pound.