IMO, Market manipulations and Strong sentiments will cause pumps and dumps
You can't get away with the systematic risk like stock market crash or KOL's negative speech.
But you can front run some market manipulation.
Since bitcoin is highly leveraged, when there's imbalance long-short ratio + high open interest
Big players will likely to trade against retail investors, and make profit from liquidations.
For example:
When long-short ratio and open interest is much higher than average.
That means a lot more people are longing bitcoin.
https://coinpls.com/wp-content/uploads/2021/08/tradingview_dashboard.pngYou can see from the image i share in above link, the long-short ratio is super high before it get crash.
You can also check orderbook + trades history,
when orderbook get thinner and imbalance. (There's too much order accumulated on one side)
And trade volume is low, it could be a good time for market manipulation.
For finding long-short ratio and open interest, there's free data available from Binance.
https://www.binance.com/en/futures/funding-history/4*long-short ratio = accounts with long position / accounts with short position
*open interest = opening contract amount nominated in USD.
Let me know if this is helpful for you.