Dude sedning btc is very expensive nowaday, it costs around $1-$4 to send btc so it makes small amounts useless to send.
Any other cryptocurrency?
Trade with this guy here:
https://paxful.com/offer/6vjoW99dW17. He has limits of 1-100 USD, you'll get bitcoin to your paxful wallet with no fees. Just make sure that you use the inbuilt escrow and follow all instructions.
I would suggest you save up and have at least $20 before you sell it though, because firstly you won't get very good offers for just $6 because the amount is too small for anyone to waste their time with and secondly transaction fees will eat up like 30% of that amount when it arrives at your wallet and will be another 30% when you send it to someone again.