ahhhh
I knew there was something wrong when you said they gave a guide.
You downloaded the wrong electrum
It was a phishing scam
https://electrum.org/#download
The above is theirs
Nope this is the URL when you have clicked on the download menu, it isn't theirs and the whole coins were sent to the address, I feel OP had his wallet compromised or something
This is the homepage, so everything looks clean and pretty straightforward.
So sorry for your loss
Localbitcoin shutdown 2023, I thought everybody would have withdrawn their funds by now.
This loss is not from localbitcoins.com as OP paints it, they sent the coin to the address you provided, I feel you had your wallet compromised by in one way or the other and funds were removed from the wallet. If OP still has any need for the remaining funds in the wallet, he should move it out of the wallet before it is gone too.