Brake failure and its consequences…

Aloha and Moin, this article is more to be understood as a warning but also as a question on my part. Yesterday, during a braking process, the brake hose burst on the front right. But as if that wasn’t enough, the complete brake failed. I then kicked the car with the hand brake to stand. Now, on the one hand, my question: why did the second brake circuit also fail? On the other hand, the warning: whatever it was about, you should do it with your cars. Oh yes, I drive a Ford Escord combo. Built: 1997. 1,6L 90 HP Zetec Maschiene. Best regards Florium