We've all been stuck in the battle of staying out of the market to expect a "crash" which is really just a retracement. The world has yet to see the once in 100 years "Grand Crash" which will completely devastate the global economy, and that only happens when the S&P 500 starts trading below $1,450 with the new target down to $520.
Instead of only looking for shorts or only look for longs, do both! Analyze price action and trade accordingly. If it's breaking key resistance, then buy with set risk. If i'ts breaking key support then sell with set risk. That's what people have been doing for 100 years; follow what works.
Waiting for the crash is just as bad as buying at the top. Trade in the moment, accept losses, and capitalize off of every move in the market.