Four types of coins I won't buy during a bull market:

1. I won't buy coins that others are hyping. The risk is too high, and if the market is controlled by the whales, they cannot significantly pump the price.

2. I won't buy VC-backed coins. With a large amount of tokens yet to be unlocked and initial valuations in the billions, buying them just provides liquidity for VC exits.

3. I won't buy coins in the top ten by market cap. The overall price increase for the top five coins is relatively small, making them suitable for large investments but not for smaller ones.

4. I won't buy platform tokens. Even the best platforms can collapse, as seen with FTX's unpredictable systemic risks.