Traders should know the concept of leverage, this can magnify profit but also can magnify the loss too, max leverage also depends on type or market, in FXOpen for CFD trading oil use leverage 1:10 only, and most brokers CFD offer this leverage for oil trading CFD.
Imo, leverage can really enhance the profits provided, the trader is really cautious and knows what he is doing. Or else it can eat up the whole account.
For beginner the best leverage would be lower to avoid higher loss and risks. I suggest trading with FP markets leverage which is 1:30 the minimum opening balance is $100 with tight spreads and over 10000 tradable instruments.
Leverage in forex trading is useful for traders who start from a low trading budget because they can work and start with the smallest position size as a minimum of 0.01, beginner choose low leverage when they face margin calls still the best of balance in the account.
The best forex leverage for a newbie would be 1:10. as they are new to the trade, so low leverage implies much less chance for loss for them.
Imo, leverage should be used only when you know what you are doing and are having a solid trading plan.
For beginners, using a low leverage is preferable to avoid higher risks and losses; I recommend trading with FP markets because their ASIC regulation offers a leverage of 30:1 and it is dependable with a good customer service team.