Hello
i want to sell my bitcoins in localbitcoins and receive my money in paypal but i read there are scammers can chargeback the money after i send the my bitcoins can you please inform me how to protect myself as a seller when i sell any bitcoins ?
You really can't.
You will generally need to charge a higher premium when dealing with PayPal in order to account for the risk of chargebacks. However IMO, no premium is high enough to account for this risk (that is also low enough for those acting legitimately will be willing to buy from you).