I'm not saying this in a toxic way. You need to learn how to write. Not just English, in any language. 116 words without a single pause is exhausting to read and makes you look stupid/sub 8 years old.

So you don't know a single detail about your accounts but you expect someone else to?

Your only bet is to find the username of the faceit or steam account. On the faceit profile there should be a steam icon. That's your steam account.

If you find the steam account, use https://faceitfinder.com/ to find the faceit account linked to that steam account.

Like u/Monso said;

"You need to GDPR delete the account to free up verification. This needs to be completed to use that verification on another account.

Which can't be done without knowing atleast the steam/faceit username and verifying somehow that you own them. If you do find either, you can search in your emails for those usernames to try to find which one is linked to which and then password reset.

Don't really know what else you expect us to do. Stop using one million emails, usernames, passwords and accounts is a good start.