Importance market entry point

Might be stating the obvious here but especially for beginners/newcomers its important to understand how the price is volatile and goes up and goes down.

I often see people asking if its a good time to buy and its often paired with the advice; its always a good time to buy insert coin. I doubt people who bought BTC at 60k+$ would agree with.

I started out about 14 months ago buying LTC only to see my investment go down 60ish% in May '22. (Rookie numbers ikr) Instead of forfeiting, i knew there was a halving event coming to LTC in 2023 and didnt overleverage my investment so i could easily doubled down on DCA. But i keep thinking what if i bought all my coins during the downtrend. I wouldve made much more profit already.

How do you guys decide on the entry point, like a sell target do you also set a buy target for a specific coin?