Let's illustrate.
We both have $1K to invest in Bitcoin, you bought Bitcoin at $5K on March 2020, so you own 0.2 BTC.
I also bought Bitcoin at $5K on March 2020, I own 0.2 BTC.
Next year I sold my coins at $60K, now I have $12K.
I wait for few months, then I bought Bitcoin at $30K, now I have 0.4 BTC.
After next few months I sold my coins at $60K, now I have $24K.
At the end of 2022 I bought Bitcoin at $15K, so I own 1.6 BTC.
So which one make more money at the end?
The person that bought bitcoin in 2020 with you and didn't sell but continue to DCA since then till now, will be in a big profit compare to you selling and buying. No one knows the right time to buy bitcoin in order to make profit, because no one can predict correctly the price of bitcoin, if not all traders will be in profit and everybody will be a good trader.