Where are these things? A ton of early upgrades use them, but I'm at HR village and I think I've found two of them total, both from quest rewards. I've never managed to gather them from bugnet points at all. Are they only in a specific area or something?
You can get them just about anywhere in the early game, but the most consistent and the most reliable farm spot is what was mentioned above. It's pretty annoying how hard such a basic material is to get.