In addition, you can get a visual chart for Bitcoin historical corrections from visualcapitalist.com

These corrections have two meanings:
- It is harmful and deadly for people who user over-leverages and got liquidated by forced liquidations.
- It is healthy and helpful for the market in general to move up wards after serious corrections. Especially, those corrections are golden chances for experienced and patient investors to buy dips at very high discounting price rate.

After all of these corrections, price is upwards in long trend.