Scraping sound

Hi, I have a cube ltd pro 2015 "https://keindl-sport.hr/cube-ltd-pro-29-blackline-2015-proizvod-5608/"
When i go fast or start accelerating quickly I sometimes hear a scraping sound which is quite loud any fells like its coming from the front wheel, more specifically the disk. This scaping, grinding sound is bugging the hell out of me. I cant seem to fix it. I tried pushing back the pistons and re-aligning the caliper, but the problem is still here.
Help me please
When i go fast or start accelerating quickly I sometimes hear a scraping sound which is quite loud any fells like its coming from the front wheel, more specifically the disk. This scaping, grinding sound is bugging the hell out of me. I cant seem to fix it. I tried pushing back the pistons and re-aligning the caliper, but the problem is still here.
Help me please
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