What is the secret for picking lipstick colors?

Darcy • I am inimitable; I am an original. 🦋 Chaotic Neutral

Every time I go to buy lipstick, I pick out colors that I think will look good against my skin tone, only to get it on my lips and its way too dark or way too light... How do I pick the right colors?

I'm very fair skinned btw if anyone has suggestions for colors to try.