We have already voted so there's no need for a second vote. A second vote is what happened to other countries that tried to leave the EU, so don't be seduced into that. We voted to leave, not for trade deals. Talk of deals only happened after the result was announced. Theresa May has "negotiated" in bad faith ever since and only wants us to remain.
If there is a second vote, you could vote leave -what could be more democratic.