Is it mainly with the first few layers? It could be the first layer not sticking properly, curling up so the next layer the nozzle bumps against it. This causes noise and sometimes layer shifts. Try printing slower for the first layer and or adjust the bed temperature and nozzle temp.
Also make sure the bed is clean, and has a good print surface like pva glue, kapton tape, hairspray, pei or buildtak etc. Try what works for you.
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Kind regards
Imqqmi
NFAN CoreXY printer:
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reprap.org]