I would say you should understand crypto correlation , this way you can invest in opposite directions.
For example: Altcoins within the same sector: Cryptocurrencies within the same sector or with similar use cases may exhibit correlations. For example, cryptocurrencies focused on decentralized finance (DeFi), such as Aave (AAVE), Compound (COMP), and Uniswap (UNI), have shown correlations with each other due to their involvement in similar aspects of the crypto ecosystem.