Question Oiling/lubricating CPU fan

Mar 4, 2020
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Hello!
My CPU fan started loudly rattling/buzzing recently, so I decided to try around and fix it.
I watched some videos, that show how to lubricate the fan, so it doesn't emmit that rattling sound, and they all say that the first step is removing the sticker and then pouring a tiny bit of oil/lubricant into the ball-bearer, which is usually showed to be right underneath the sticker, but I just cant seem to find it..? I'm not really sure if it's even there, cause there's only plastic under the sticker. I searcher both sides of the fan, but none has any hole in it.
Is there some any other way on oiling it? There is a tiny opening which separates the blades a tiny bit, so maybe I should try something there?
I wanted to try and remove the blades too, but I'm scared of breaking something. I included some photos too.

View: http://imgur.com/a/URAXO06

(The two sides of the fan, and the factory sticker if it helps)