We have a saying in the Netherlands: “Nee heb je, ja kun je krijgen.” It translates to something like you’ve already got a no; you might as well try for a yes — it’s always better to ask rather than stay silent.
There’s a few English phrases that are similar. Up north, shy bairns get nowt is a common instruction from parents; across the pond, hockey player Wayne Gretzky contributed the saying you miss 100% of the shots you don’t take to the local lexicon in a 1991 interview.
Are there any similar sayings in your neck of the woods, or your language? I’d love to hear.