Soundcore q30 aftertime anc become nearly same as normal

I bought q30 from AliExpress ankar store on 5 dec 2022 and at that time its anc was actually different it cancel most sound and it was like pin drop silent but now after around 2 month still no physical damaged but it anc reduce so much that it does not even cancel clock click sound and it does not even feel like anc is on but it on as it say , it reduce all sound a bit but its not much as before so i wanna ask is there any bug or any setting on there i reset it no solution, i clean it , check for any cussion issue but it not a single one
The sound still is good but the anc i want it better than now

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