One of the simplest methods to benefit from another trader's in-depth knowledge is by copy trading. Additionally, it implies that you maintain full control over the result. You can still end deals and start new ones whenever you choose. But if you copy another trader, you might be able to profit from their expertise.
But there are also some drawbacks. For instance, signal providers won't always place profitable trades.
You cannot build adequate trading knowledge and skills if you solely rely on copy trading.
To imitate the trades of some signal providers, a commission may be required.