I will say that learning how to trade forex profitably is very analogous to learning how to ride a bicycle. Just like initially while learning a bicycle there are frequent chances of you being fallen down and being hurt, in the same way while learning stage of forex trading overall you may loose.
But once you learn how to balance the bicycle left and ride while you move ahead on it, even if you try to fall it is very difficult for you to fall. In the same way once you learn how to balance the profits and losses and continue to trade in forex, then it is very difficult for you to loose with some exceptions like sudden news or currency crash etc which are similar to an accident you face on the road and you should not doubt on your knowledge and experience of your learning. Because profit and loss balance is very important since you can't close each trade in profit and each trade in loss even if you try to do so.
So the most important thing is using low and reasonably low risk per trade and using a reasonable stoploss to start with for beginners, then even if you try to loose still it is difficult for you to loose in long run. For example, try to trade with 0.01 lot in a 1000 USD or 2000 USD balance or more with a reasonable stoploss with support and resistance levels , then even a worst kind of trader can't loose in long run though he may not make profit everyday or every week.
But try the same 0.01 lot with a 100 USD balance or 200 USD balance, then a series of losses account will go down and the trader will switch to a new strategy and repeat the process.
So my advice is to use a very low risk and reasonable stoploss(not very high or low) and preferably start with a cent account so that you can't loose a lot from the beginning, but still have the privilege of trading in a large balance.