You post those in the Battle Royale section and follow the rules:
[Trading] Read this or you won't get approved. (Read this or you won't get approved.)
Proper section:
Playerunknown's Battlegrounds Buy Sell Trade
https://www.ownedcore.com/forums/mmo...uy-sell-trade/
https://www.ownedcore.com/forums/mmo...uy-sell-trade/