I 100% believe in market timing. I usually do extremely well during market crashes, and average during market rises.

I missed the dotcom crash because I didn't want to invest at all, but caught all of the 2008-2009 crash and went long on the bottom in March 2009, but was mostly average after the crash. I caught the entire pandemic drop in March 2020 and also got long at the bottom, but again was only average for the last 2 years. I then went extremely short November 2021 and have been short ever since, and have doubled my trading account. I'm still very short, but by rolling over my options and extending the strike price, I've pocketed most of my gains so if the market rips higher from here I'll only lose about 10% of my gains, but I'm also long META and other stocks, so I'll participate on the long side as well.