If you need help in futures trading, then you should not be futures trading, simple as that. The simplest fact is that if you do high leverage and the price goes against what direction you wagered on (and yes you wager this, not invest, it is total gambling) then you will be liquidated, which means all of your order will be gone and you will lose all of that money.
High leverage is highly risky, but your comment is opposed to 1x leverage which means no leverage, you will be able to go short or long but with your own funds. But leveraging is what is rsiky. But he reason many people are trading on future trading is because they want to leverage which is highly risky.