newcomers should choose the strategy which is more appropriate to the concept of trading that will be used , if love doing scalping should choose the broker which allows trading concept such as this.
OP asked a wrong question. Because it is not possible for a new person to profit reliably . It is like to ask what is the best method for a new chess player to get world chess champship. Or how to become a NBA player after you learn playing basketball for a few months. Experience builds slowly and sometimes successful decisions is a result of intuition which is basically unconscious experience.
Indeed. The purpose of the first strategy (which should of course have been learned and adapted in demo trading beforehand) is to learn how to judge strategies, how to cope with your own psychology and how to manage risk when real money is involved. Making a profit is not a realistic objective, though it should be a minor by-product of a settled strategy.
In any case, no matter what strategy a beginner takes until he tests it, it makes no sense to work on a real account for at least 3 months on a demo account?
Obviously, there is no point of testing a new strategy on a live account. So the best thing to do is testing on demo.