When I apply brakes, the vehicle pulls to the left?

Hello,

Brake pull can happen due to seized brake caliper slides, failure of a brake hose. It can also happen due to worn ball joint, even due to tire core separation.
Best course of action would be to take a look at each possible area.

Here is a helpful guide that covers this:

https://www.2carpros.com/articles/car-pulls-right-or-left-when-driving-or-braking

Seized caliper slides is one of the common causes of brake pull. Usually this will lead to the seized side having higher temperature on the brake components. After a drive if you use a laser thermometer you can check to see the temperature of the calipers. If one side is significantly hotter than the other side, that hot side is the issue.

Please let me know what you find.
Thank you.