Buying.
So, you want to buy Bitcoin? In other words, you can receive payments through "an irreversible payment."
For each trade, you will have to provide a form of identity verification as well as a handwritten statement stating your bitcoin talk username, my username (smartbitcoininvestor) tradeamount$ and date.
You send money through Paypal, ApplePay,..etc "reversible payment" and will receive Bitcoin "an irreversible payment." Which means you are supposed to be trusted or provide an adequate warranty/escrow.
As a "reliable purchaser & verified bitcoin dealer on Paxful and LocalBitcoins" it is best to show links to your account on those sites, that may enhance credibility.
Good luck
I have added my Paxful profile to the thread topic.