Best times to buy bitcoin was in 2011, 2015, 2019, 2022 ... roughly every 4 years. Exactly at the time HN thinks bitcoin is dead and burried.
And best times to sell (if you needed to sell) was in 2013, 2017, 2021 ... so I think the next time will be around 2025.
Every cycle swings less (in term of percentage change) so the next one will be just few hundred percent (troth to peak) and following ones even smaller till bitcoin will become yet another random walk asset like stocks.