Where i can report a fake account scammer?

you should talk to steam support for this,
steamgifts is not steam
if you want to punish him even on steamgifts if he is using this site, than only through a support ticket IF he did break any rule against this site steamgifts, not against steam

not here, on the contrary, calling out is forbidden here, so you should remove any links to his identity.
If he stole a steamgift you can file a report over at steamrep.com

The Steam profile and SG profile you linked are different. You got rused.
And as others said, no calling out.

No calling out. The user you traded with does not have a Steam account. For future trades, always check yourself if the Steamgifts (or other account) is linked to the Steam account you are trading with. (e.g. by using enhanced Steam)

"Same name, same profile picture? Must be the same person!" Sigh... people need to learn to be more observant. There's a link right on their SG profile that takes you to their real Steam profile.

O O, not that one again, one of the most proficient and active impersonators that hasn't got a SG account.

I you use Steamrep you'll see that it's already banned on Steamrep besides the large warning that it's reported for fraude.

I would use steam report for this, Good luck and sorry for your loss mate.

of course, every day.

A few things:
1) Calling out is not allowed here. I would remove anything that positively IDs him or else you risk getting banned from here for a bit. Check the FAQ if you're unsure on this.
2) The SG profile and the Steam profiles you linked seem to be different people. Always make sure you're trading with who the person says they are. Use EnhancedSteam to check if they have a SG profile at all or go backwards through SG to make sure the person you're talking to is the person linked.
3) Re: reporting. Report on Steam, report on SG if they have a profile, and report on SteamRep. It's not going to help you really, but it will help identify the individual as a scammer. It looks like he's already banned on SR.

Sorry you lost out on the game, but hopefully you'll know exactly what to do the next time you want to trade. Always gotta be extra careful when it's an in-demand game.

Posting links of someone's profile with accusations is against rules leading to one week suspension. remove that link quick.

Also he is a impersonator who used profile and feedback link of someone else at SG to fool you. If you checked steam profile link on SG page you would have found the real owner of that 107+ Rep! So mistake is yours especially when the fake profile's account clearly shows a trade ban!

holy gravedigging skills

steam support just shitting down reports about scammers and do nothing....
And ofc.... you can not link their profiles 'cos it is against the rules.

why in the world did this get necro-bumped?? a support member alrdy commented, its alrdy been dealt with the only way it can be.

@OP u still should remove the links to both the scammer and the completely innocent guy he masked behind - especially since ppl are dredging this up from nowhere again.