WEB pages and cookies

[Jacob]

hi,
over a long time of tests I have discovered that the cookies are save to my computer regardless to accept or reject cookies at entrance with a button. I have tested many web pages. Some web sites offer to reject cookies, some don't. Once I rejected the cookies, the cookies were saved to my computer. Once I deleted the cookies immediately from my computer, mostly the web pages worked without problems. Some web sites like Microsoft.com downloads cookies continuously regardless I rejected the cookies.
I have tested Microsoft's Teams. I registered to a conference and waited 20 minutes for invitation to the room. Over twenty minutes of no activity Microsoft stored on my computer 46.1 Mbyte cookies.

I have looked over the net for cookies source codes to get information what of data the cookies collect. Nothing was found. On the other hand, I know, that cookies collecting the data from computer of web site visitor and send the data to unknown server.

[PopCorn]

Does anyone have source codes of cookies?

[MicroLab]

Except for some DIY cookies available on GitHub, there are no source codes. First of all, there are no cookie codes from Google. The cookies are usually stored on the customer's computer, regardless of whether the customer rejects them. The cookies are stored in any case and the customer does not know what the cookies do on their computer and what they send and to whom.

[jezzer]

I have read, that data collected by cookies are stored at Google cloud and sold by US company Datastreem as "macroeconomics data" to anybody ready to pay.