Yes I agree with you, an investor should not wait for a bear market to invest, because we can never be sure that the bitcoin market will go down in the future, the bitcoin market may go up instead of down, it just Only we will continue to lose good investment opportunities.
They can not identify it's a bear market, a bottom of bear market when it's on going and months later when it realized bear market completed and Bitcoin already rallied a lot from its bottom, they missed the bear market and bottom range for purchases.
They can not "time the market" and if they want to find bottom, absolute bottom literally, they will miss many opportunities like you said.
So whatever the price, we just have to buy only, and think that the price you are buying Bitcoin at the moment is the best price to buy. And we really need to follow DCA to invest in Bitcoin, if we invest in Bitcoin through DCA it will give us average value in long term, so we can be more profitable. So follow DCA and plan for long term holding, you will definitely succeed.
DCA is a strategy for purchasing gradually with time, and it helps you to from missing opportunities.
DCA for purchasing bitcoin, storing bought bitcoin in open source non custodial wallet, and holding it, you will succeed in Bitcoin investment adventure.