BTW, at no point did I say that you are paranoid. If you are referring to me as a paranoid user, no problem, I don't sweat it, let it roll, I don't care.
No hard feelings, but this is paranoid behavior. Keeping backup on 100 different locations and backups of backups on another 100 locations. It's just too much. I'm not saying you're doing it, it's just hyperbole.
All you need is phone with 2FA and multiple ways of identity verification (e-mail, 2FA code, phone number, security key etc.). You don't need to store 2FA codes on another phones, backed up to three cloud service providers with decryption keys buried somewhere underground. If you lose 2FA code, you still have e-mail. If you lose 2FA code and e-mail, you still have phone number. If it happens that you lose 2FA code, e-mail, phone number (extremely unlikely), you still have security key. There's no need for huge amount of backups.
I would know because I was keeping backups on 5 different cloud services when I was a kid as I thought there are increased chances of me being hacked. Then I realized I don't need to do that because average boring people aren't the target for these attacks.
For most services, I open my email account or other service in a new private window, so every time I log in, I need to enter the MFA token again or touch my YubiKey with my finger to access my account. I'm not too lazy to pick up my phone and see which token I'm going to enter.
See? This is what I'm talking about. This is paranoid behavior. Always using private window and singing in again and again because you're afraid of cookie theft. No doubt cookie theft exists and there were attacks like this, but take a look who was the victim and how they were hacked. It's really important to see how exactly they were infected so you won't make their mistake.
Linus Tech Tips was a victim of cookie theft. Their employee opened malicious attachment and it stole their cookies. But Linus isn't just an average person; he is famous person running a famous company. Hence the reason why they were hacked multiple times. He wasn't the only one, many celebrities were hacked too, even Elon Musk.
You really don't have a reason to worry about getting hacked. If you're taking precautions (don't visit shady sites, download suspicious programs, have AV/Firewall, never open suspicious attachments,...), chances of you getting hacked are equal to zero.
I like to be paranoid, just too fatigued to do so
Maybe it's better it stays that way. I know people that were so paranoid they had a lot of security software installed which ultimately helped them get infected/hacked. The more software/services you use, the greater are chances of getting infected/hacked. No software/service is immune to bugs and by using a lot of them, you're essentially opening more ways for them to get you.