You should diversify your investment portfolio and consider altcoins. Altcoins can offer different investment opportunities and potential returns, but it's crucial to conduct thorough research and understand the specific characteristics, use cases, and risks associated with each altcoin before investing.
I've done that, and diversified my assets in some of the altcoins that I mentioned. But Bitcoin does become a major long-term investment. For some altcoins, I chose the top altcoins with quite good development, especially ETH which is everyone's favorite coin after Bitcoin. Research also needs to be done, although some coins are top coins, we don't want incidents like LUNA to happen again and LUNA was one of the top coins at that time.