Forex is a platform for trading various assets or securities. You can buy or sell oil, gold or company shares using this site, but you need to choose what it will be profitable to invest your money in. After the oil price was negative, I think that you shouldn't rely too much on such investments, so for a beginner it's better to invest in areas such as cryptocurrency, for example. I know that everyone knows the story of how bitcoin grew in price over 10 years. This investment method has risks, like any investment, but in this case, you can always find a crypto exchange like hiribi
and sell your bitcoins quickly and at the highest price, so if you don't want to take too much risk, then I think that bitcoin is a good way to start trading forex.