At what age do people think you've given up on marriage these days?

I also got married quite late..
These days, even for women in their 40s,
it's not a stage of giving up on marriage, but rather
a time when many are seriously looking for a partner.
At what age for a man and a woman (in Korean age)
do you think people go, "Ah... they won't be able to marry..."
and assume they've given up, no matter how capable or beautiful they are?