Why would I randomly create - brand new e-mail to sign up to a game?

Because this is internet safety 101? Hello? Separate email for everything. Use an email once, for one thing. Dont connect them.

Especially your irl shit. My amazon email is diff from my paypal, which is diff from my banks. They're all diff from my Netflix, spotify etc. If it needs my real info, it has it. If it doesn't, it doesn't. If it only needs it for an order, it'll have it for that, then that info gets removed after til it needs it again (shipping address on amazon example). But they're never connected with the same email.

And you definitely dont want to link your irl shit with your gaming shit. Fake names/info/profile for each of your gaming accounts. Ppl dox themselves too easily. Which leads to finding their irl shit and getting themselves recovered.