Where to put money aside Nasdaq if think a crash is coming

**TLDR**: Dot com bust took NASDAQ 16 years to recover. Where should money go to (1) consolidate the massive gains last 5yrs, and (2) risk adust for possible crash from 3 massive AI IPOs? What are other very long term (multi decade) investment options aside from NASDAQ / S&P500? (So, to all the regards that means options are out. Unless there's a play that mathematically makes sense to remain in Nasdaq & buy hedge puts?) I'm not saying a crash is definitely coming but the below graph shows that when dot com crash did come, it took 16 years to recover. The current AI euphoria could lead to one with the 3 big IPOs happening this year. Again, not saying it will, but it could. NASDAQ was up 500% in 3 yrs during dot com, so it's not as extreme now, but it could become so in next 6 months. Where is a good place to rotate all the capital? Is it gold, is it something else? (Gold seems like an old money, unproductive investment. Maybe that's good? I don't know.) There's always the risk of being conservative, rotating out, nothing happening and then missing out on 100% gains like over last 3 years.