Seat Leon 1M – bad brakes

Hello, I have the following problem with my Seat Leon, model 1m, built in 2004, 1.9TDI, 110kw/150ps with 193,000km (no all-wheel drive). The braking performance is extremely bad compared to all cars I have known and even driven so far. Even with full braking it is not possible for me to push the car into the ABS. Only with brakes from very low speed (e.g. 30 zone) the braking effect is acceptable. eläge Jurid) is also anything but beautiful (see pictures). However, a free workshop gave me the information that the braking performance should still be completely sufficient despite the bad performance pattern. To my surprise I also got new TÜV this month, contrary to my expectations. Below are the results of the braking performance: Operating brake: Front left: 300 [daN] Front right: 280 [daN] Back left: 180 [daN] Back right: 180 [daN] Brake BBA: 51 % parking brake: Left: 130 [daN] Right: 140 [daN] Deceleration FBA: 15 % The question now arises how I can repair my brakes. I fear that only the change of brake discs and pads will bring nothing in the long term, as the discs will probably form a rim again after a very short time. Could it be on the brake calipers, vacuum pump or also the brake power amplifier?