Yes, you need to learn risk management for trading. And if you learn not to lose money trading, then over time, when you acquire the necessary trading knowledge, you will be able to make a profit. You can find all the necessary information for studying using Google or in the relevant topics on this forum.
Risk management is the most important thing for a trader to be successful. In order for a trader to be successful, along with acquiring trading knowledge and developing skills, one must also have the knowledge to manage risk. When newbie traders first start trading their thoughts are to use trading for quick profits and at the same time they don't follow things like risk management of their account.
Therefore, as soon as you make a profit in trading, you must manage the risk of your account, otherwise, even if you make a huge profit in trading, you will not be able to maintain that profit.