(mostly because I was using them In the bull run and the bot didn't konw how to handle high jumps accordingly, making me lose money).
Thats the reasons met behind all the failure and its too good that you came to know about it by all yourself. Well this is the prime reason why bots fail always, they dont know how to act to the market situation according to these trends. Crypto currencies are hard and fast when it comes to the trading, they could go up and down very fast and thus create situation unrecognised by the algorithm of bots. These scripts are just art work of similar algorithm, and when thousands of users use it at the same time and thus it could fail and bot to bot fights might just start. Finally they can fail.