LLM1984

Good evening, I am facing the following situation on the skoda octava 2021 combi mk4 automatic transmission related to braking: 1 - if the car is driving on a straight line and I apply the brake, it is not felt and there is no anomaly in the brake pedal or the brake system. 2 - if the car is on a ramp or slope, the following phenomenon happens... - on the ramp I hold the brake with my foot and then lift my foot to press the accelerator and when the car starts, I hear a squeak from the brake pedal area. (as if it gets stuck and jumps from the stuck position) it is not heard from the outside, it is heard inside the car in the brake pedal area, and if I am not mistaken I think the brake pedal is also moving. (the autohold button is not activated, the car remains in position D while on the ramp) Below I attach a link found on youtube how it manifests itself and how it sounds: https://www.youtube.com/watch?v=moppPHt4ySA What should I check? What are my options for fixing it? Or is it normal to hear it? Thank you