Please can someone help me I've been scammed selling 251m mods please tell me where to post thanks

I found someone on sythe and found his discord. He said he'd buy my 251m osrs for £44. I traded it him and he closed the discord.

The trouble is I needed the money for a family emergency so I pawned my laptop after being scammed. All I remember is a name dyno on the discord and on a thread on page 2 accepting uk bank transfer. If anyone can help me find who is was

Could I have messed up on discord?is there a fake sythe site I could have gone it looked exactly the same though.. Discord locked me from making a new ticket so I'm sure I've been scammed?

I dropped my most important items from my iron man for the 251m as well....

Any help or advice really appreciated