Fabia Mk3 1.0 TSI 110HP Spring like noise coming from brake pedal

Hello Everyone.

I have an fabia mk3 1.0 tsi 110hp 6 speed manual 2017 with around 81k km on it, It was bought used at around 78k km.

I noticed the sound after around 1k km of usage after i bought it, i asked the previous owner about it but he either doesnt recall having ever heard it/felt it or forgot about it.

To clarify the issue: When you press the brake pedal you can hear and feel a spring like sound and feeback into the pedal, there are multiples of these sound for one press of the pedal.

I tought it was air in the system, after i bled the air out of all the brake calipers the issue was gone for a little while, but it came bake not long after. ( this air bleed was done twice and after i changed front and back discs and pads and brake fluid )

Does anyone have any suggestions ? i might try to record it to see if the camera picks it up.

I also checked the abs sensor to be clean and properly seated and bolted.