Make sure your settings are saved so the loader is there next time you restart. Final Thoughts

Navigate to the Add-ons or Plugins menu.

Thousands of seamless PBR materials under the CC0 license. PolyHaven: High-end, curated textures that are 100% free. Poly.cam: Great for real-world scanned textures. Installation Guide: How to Install Your Free Loader

Go to Edit > Preferences > Add-ons and search for "Node Wrangler." Check the box to enable it.