First, I don't trade coins with too large market capitalization; Bitcoin's market capitalization is already 2 trillion. Even if it grows in the future, the short-term space won't be very large, and small funds don't need to participate.
I don't trade coins with too small market capitalization; small market capitalization indicates a lack of consensus and there is a possibility of delisting, so it's best to stay away.
I don't trade value coins; value investing can be in vain. No matter how advanced the technology is, it still requires capital investment.
I also don't trade meme coins; meme coins are purely speculative and don't align with my pragmatic investment philosophy.
I don't trade very old coins; there are too many stuck positions in old coins, and it's basically very difficult to return to former historical highs, as seen with FIL.
Lastly, I basically don't trade newly issued coins; new coins need to be properly washed for a sufficient duration before playing, otherwise, there's a risk of losing a lot of money.