https://www.cnet.com/news/apex-legends-how-to-find-the-best-weapons-armor-and-loot/

You may have already noticed that when you walk into a new area in King's Canyon, the loot quality is listed just below the name of that location. If it isn't listed, you'll just be getting common (white) loot in that area. But if you see mid-tier (blue), your chances for better gear improve, and high-tier (purple) is even better than that. If you're really lucky, you'll come upon legendary gear (yellow), but we'll get to that later. For now, you need to know some things about tier levels and where you should land on the map.

If you think certain locations in Apex Legends tend to have better loot than others, you're not wrong. Though Respawn has yet to confirm exactly how its loot distribution works, diligent players are mapping out their own experiences by voting on the loot they see at each location. The idea is as more information rolls in, we'll have a better understanding of where the best loot is. Check out the interactive map by vjoeys, where you can add your own experiences. Here's a screenshot of the map: