If you must make a firm offer, you must try the water with very little money. Maybe I'm lucky. You can make money by doing whatever you want when you first go in to play. However, there will be unexpected situations in the market, which is likely to make people's thinking stagnate and there is no corresponding action, which will eventually cause great losses.
Therefore, beginners can only use a little money to play simulation, and it is best to only open 1 hand. Although this is unreasonable, it is necessary for beginners to practice.