I was thinking about this during the night... And i did manage to think up some more scenario's:
You saved your seed in your google drive. IF you have your drive open on your device AND the device contains malware, said malware should be able to access your drive from your actual device, not needing the 2FA (since you'll provide the 2FA token yourself when you use drive on the infected device).
A second one would be if you used the wifi in the airport and didn't use a vpn, there are still attack vectors if you do this...
https://www.cloudwards.net/dangers-of-public-wifi/ (not mine, just one of the first google hits i got when searching for the dangers of using public wifi). Some of these attack vectors might be able to steal your google credentials, install malware,...
Bottom line is: it's allmost impossible somebody randomly guessed your 24 words in the correct order. The odds are so close to 0, that in reality you could say they're ~0.
I know, i know, when you see 24 words, you'll always think: "hey, it should be easy to brute force such a seed". But it's not... Ledger used to have a really interesting article about this, but they removed it when they cleaned up their site, but it's still in the google cache:
https://webcache.googleusercontent.com/search?q=cache:xR-zGi4JaQ0J:https://ledger.readthedocs.io/en/stable/background/master_seed.html+&cd=1&hl=nl&ct=clnk&gl=nlSo, there are only 2 types of attack vectors left: either somebody got to your seed, or somebody compromised your ledger device... And in all fairness, it was probably the seed you saved in your google drive... Am i 100% sure: no, but the odds are stacked against you.
It's like if i rented a super new and hard to brake anonymous safe deposit box in the public basement of a bank, but i stored the key, the combination to the lock and the directions to the safe deposit box together under a rock in my front yard: if i get robbed, there's a small chance the robber found a way to break into a super hard to brake deposit box by crafting a new key and using a stethoscope to find my combination, but the odds are far bigger he just saw a strange rock in my front yard, picked it up and found a key, combination and directions to my safe...
Saving a hardware wallet's seedphrase in a cloud storage is reducing your hardware wallet's security to the level of any run of the mill online wallet.Now, the above bolded part might seem like i'm victim blaming, but believe me: i'm not... I just tought it needed to be bolded out to make sure newbies with the same idear as you had see this part straight away. I'm very sorry for your loss (like it has been said before: transactions are irreversible). Even if you made mistakes, nobody has the right to take your funds from you... It's not because i leave the doors to my house open that somebody has the right to steal my stuff... But if i want to know why my stuff has been stolen: it's because i left the front door open...