Are you applying it to completely dry skin, or do you spray right after showering?
The issue is probably that you're not layering properly and maybe using too little. Pulse points are good, but they're not the whole story. Here's what actually works: apply right after you shower when your skin is still slightly damp (not soaking wet, just a bit moist). Damp skin holds fragrance way better than dry skin. Spray on your pulse points - wrists, inside elbows, neck, behind ears - but also hit your chest, collarbone area, and even your hair if the scent is strong enough. The key is using enough product. Most people undersprint because they're worried about overdoing it, but you need a decent cloud of it, not just a light mist.
Another trick is to layer your fragrance. If the brand makes a body lotion or shower gel in the same scent, use that first. The fragrance molecules stick to the oils in lotion way better than to bare skin. And don't rub your wrists together after spraying - that breaks down the fragrance molecules. Let them dry naturally. Also, reapply isn't cheating or a sign you're doing something wrong. Even expensive fragrances fade after 6-8 hours for most people, especially if you're active or sweating. Keep a small travel bottle in your bag and touch up mid-afternoon if you want that fresh hit all day.