Yes, without a strategy you can lose everything quickly. I used to just bet chaotically, but then I realized that in
Aviator Game you can work according to a system. For example, there is a tactic of double bets: one bet on a quick exit (odds up to 1.5), and the second one is left for risk. This reduces the chances of going into the minus. If you are interested, you can have a look at Aviator Game - there are some useful tips there, which helped me to understand the game better and control my bankroll.