I have multiple email addresses based on use and how much I trust the entity collecting: - My main personal address is the most protected and only give it out

I have multiple email addresses based on use and how much I trust the entity collecting: - My main personal address is the most protected and only give it out to friends, bank, family, etc. - I have another address that I give out to Amazon, ebay, couple other trusted merchants and websites. - Next lay down, one I use for merchants I don't particularly trust like AliExpress. In addition, I only use the credit card that lets me generate a number, set max spending limit, and expiration. - Finally I have a couple that I use for general websites that I figure either could get hacked or I don't trust at all. While not 100% accurate, I can tell who has sold or "lost" my info based on the spam I receive. My main personal has some spam but I think it stems from contacts that had their accounts compromised and their contact list was snarfed. Overall the less I assume I can trust the other entity the more spam that account has. It is funny how accurate the tracking is though. I can search for something on my gaming pc and then a week later I see related ads on Youtube and sometimes even Tubi. My Amazon account uses a different email address than what I used to search on my gaming pc. While my gaming pc has accessed both gmail accounts, they weren't even logged in at the same time. I suppose they rely on IP address + IP metadata and collected advertising metadata to correlate accounts.