Scammed by @Possess for $200 any tips on PayPal dispute

[4]

Scammer username: Possess
Scammer profile link: https://RAIDUSER.com/Possess
Sales thread link: pmed me

Detailed description of what happened:

Was buying twit/Kik pair @ours for 200 and he pulled twitter.

Middleman was @Amp who can comfirm

Proof (screenshots/pictures):

Album here on phone so pic order is off -

https://imgur.com/gallery/iyBI6



Any tips on winning PayPal dispute