Everyone recommend starting trading on a demo account. I believe that you only need to learn how to press buttons on a demo, and everything else needs to be learned using a normal account. Of course, you have to deposit the lowest amount possible. Yes, Forex trading requires investment. But let it be 10-20 dollars, which will not bring you significant financial inconvenience in case of loss. Many brokers provide free accounts for trading with the possibility of withdrawing profits. This is a great opportunity for a beginner since you can not even trade on your hard-earned money.
Also, beginners often overstate a lot, opening several transactions in one direction. I advise you to quickly close them upon reaching the total profit on all transactions since the opposite is fraught with losing the deposit. Of course, it is better not to practice such trading in principle.