In fact, in my opinion, to put it simply, analysts are just bragging, independent traders are responsible for their own funds, and fund managers are responsible for their clients' funds.
Contrary to the market forecasts that analysts often make, good traders only follow the rules and never make any market forecasts. A good trader will not be a good analyst, and a good analyst will not be a good trader either. Due to their different positions, the methods they use to deal with the market are also fundamentally different. The use of analysis and the use of rules are very representative of these two types of people. The so-called "those who can talk but cannot do, and those who can do but cannot talk" probably means this.
The biggest difference between fund managers and traders lies in their grasp of risk control. In some positions, fund managers are more likely to seek opening opportunities on the right side, while most traders prefer trading techniques on the left side.
There are also differences in information, experience, logic and thinking.