Why does the scent of my perfume disappear so quickly even after I spray it? T_T

There are times when you clearly spray perfume before going out, but after a short while, the scent is barely noticeable.
At first, I simply thought the quantity was insufficient.
So, I have even tried spraying more than usual.
However, even doing that, I didn't feel like the duration changed significantly.
Conversely, I was even more confused because some people around me said it smelled.
I have also heard that as time passes, you get used to the scent and eventually can't smell it anymore.
In that case, I wondered if actual durability and perceived performance are different issues.
I was concerned because I heard that the duration of the scent varies depending on where you apply it.
I was particularly conflicted because opinions differed on whether it was better to spray it on the wrist or behind the ears.
I've heard that the scent lasts longer if your skin is well moisturized, so I was curious if that really has a significant impact.
It feels more difficult because it seems that just because a perfume is expensive, it doesn't necessarily mean it will last a long time.
I would like to know what methods everyone uses to make their perfume last longer.