How to clean corrosion on Apple Watch Series 9?

My series 9 watch has got corrosion around the digital crown, the side button and around the backside of the watch. This is an eight month old watch and I used it continuously, but this is really surprising that the corrosion problem is back on the aluminium of iWatch, which was that I believe on series 2 or series 3 basis the questions asked on this community, is it normal in 2024 as well? Is anyone of you also having the same problem? Thank you.

[Re-Titled by Moderator]