Coincidentally, there is a user with a problem similar to yours, not exactly the same, but similar
Here:
https://bitcointalk.org/index.php?topic=5551688.0...
I currently have 2 theories:
1) I for some reason used extended seed phrase (20% chance). Tried all my passwords as a 13th word, tried both electrum native segwit and BIP39.
2) I generated a seed phrase in Electrum. Then recovered the wallet, but using BEP39 option. (80%) I remember I was changing letters "h" for ' in derivation path. Probably I was copying the derivation path from some web article, so it should be smth fairly standard. Address starts with bc1q, so there are less options. I tried standard derivation paths, nothing worked. (If someone has a list I can manually bruteforce with - I'd be thankful).
Tried checking browser history from that day - nothing, its gone. Tried google activity - nothing that day, prolly used incognito. Tried recovering deleted wallet file on my macbook - nothing. Somehow cannot even recover the one I've deleted today. Going to have some sleep and hope to get more ideas tomorrow. To be honest, I don't get, how I could fk up so bad. I remember I was double checking everything I was doing to be sure I would be able to repeat that.
I am a disorganized person, so I would never be able to do something in the moment to remember it after a few weeks
It's a recommendation for anyone creating a new wallet: only use an extended word if you can write it down somewhere so you'll never forget it
Something may make sense at the time, but after a few months you won't remember it anymore. This is quite dangerous and may have happened to you, since you can't remember 100% of the steps you took to create your wallet
I would suggest that you try to find your search and browsing history, but I see that it doesn't appear
Do you still have the same Electrum installation file in your downloads folder?
You can try repeating the process and see if you can remember any important information
Another thing you can try is to remember at least where you found the tutorial to create your wallet. Maybe you can find the same article and remember something they instructed you to do