I used to be into trading, gave it up for a few years and now just getting back into it, but for the life of me cant seem to find a broker that allows trading on oil future contracts for 2021…or even just december 2020, i am not asking that much…Could anyway point me in the right direction…I would be ever so gratefull 
I know a lot of time has passed since you created this thread.
Did you ever manage to find a broker that can offer you what you wanted?
I’m relatively new to understanding futures contracts and everything futures related but out of curiosity why would you want to trade on a contract so far into the future? Wouldn’t it be much better to trade the current and most liquid contract? And as the contract comes towards expiration roll your position over to the next contract as it builds liquidity.