I have been playing in the secondary market recently and have come to a conclusion: the higher the frequency of trading, the lower the returns.

Recently, I mainly have two ways of participating in the secondary market:
1. Recommendations from online friends, I buy coins
2. Discussing with group friends
For online recommendations, I buy coins, with a budget of 3,000 USD each time, buying about 5 coins at once. Usually, group friends will give reasons for their recommendations and target prices, but I haven't done much research myself.
When discussing with group friends, the research is often more in-depth, and sometimes we even hold voice meetings to discuss.
The results are:
Online friend recommendations to buy coins: 21 trades in total, a win rate of 61.9%, a cumulative return of 3%
Discussing with group friends to buy coins: 5 trades in total, a win rate of 80%, a cumulative return of 80%
The win rate of coins recommended by online friends is actually not low, but it is quite scattered. Sometimes I don't have the energy to follow up, and I miss selling at the high point.
On the other hand, coins I choose myself, I keep a close eye on.