I have tried 1broker but it isn't working. Any suggestions as to where I can trade bitcoin with leverage? Thanks
I will suggest you to trade at yobit , c-cex.com & Poloniex these are the best exchange for trading with Bitcoin and cryptocurrency/altcoin .
But here in three of the exchange I will advice Poloniex which is only allows those altcoin who are in activity and dead coin usually remove by the exchange time to time .
he asked about trading bitcoins with
leverage learn to read before posting
none of the exchanges you posted allow that
OP you can try Kraken or bitmex
https://www.bitmex.com/https://www.kraken.com/