Look what happened to Japan stock index Nikkei 225:
https://adjusted-for-inflation.com/japanese-stock-market-nikkei-225/
It peaked in year 1990 at 38800 and only managed to get back to 24800. Now it looks likely it will never reach its all time high anymore.
Now let do a simple comparison:
Nikke 225
All time high 38800.
Second All time high 24800.
Second All time high to All time high ratio: 24800/38800 = 64%
Bitcoin
All time high 20000.
Second All time high 13000
Second All time high to All time high ratio: 13000/20000 = 65%
We can see that their Second All time high to All time high ratio are almost the same.
Is that the same pattern bitcoin will follow? Only pump and dump by whale price manipulators from now on but can only reach All time high again?
Do you own research on the Nikkei 225 index historical patterns and make your conclusion.
(you can view detailed Nikkei 225 index data here: https://www.tradingview.com/chart/?symbol=TVC%3ANI225)
But the main problem is we are not yet sure when is the next bull run to happen as many are waiting for this moment. 20k$ bitcoin price can be break easily especially if the big whales will take the lead and the small investors will follow.