Do 3 candlestick patterns need to be present or is 1–3 good enough?

Hello I’m learning about candlestick patterns, and I learned that knowing 3 candlestick patterns is good enough and that more than that is kinda unnecessary.
I know:
Three white soldiers/three black crows
Evening star/ morning star
And the 3 line strike
Do all three of these patterns need to be present for me to enter in a sell or buy, or is 1 to 3 enough?
Thanks in advance!