Replaced 12v aux battery and the car died

Earlier today, when I first tried to start my Prius, all the lights on the dashboard were flashing, the brake pedal pushed up against my foot, the car would not start, and I heard a soft pumping noise for under the hood. I called triple AAA and they promptly jumped the battery, which allowed the car to start. I drove to Auto Zone and purchased a replacement battery as the instruction of the AAA tech. I replaced the the 12v battery just fine, but there’s now zero power in the car. The fuses are fine, there’s voltage on the battery terminals, but still the brake lights won’t even turn on when I press the pedal. Do I need to replace the hybrid/traction? Is there a way to recharge that battery? What am I missing? This is not the first time I replaced a 12v car battery but it’s the first time I’ve ever experienced zero lights or zero horn—I can’t even unlock the trunk. Please help.