The boosts help. Either get lucky with NPC that they choose good pokémon, or invite others. The things that get more Dynite Ore than 3 regardless of investigating the area are
•Explore the innermost area (Basically enter the legendary den)
•Catch the legendary (it's easy, for me it works when i use luxury balls.)
•Explore the den safely. (No pokémon faint at all.)
This helps to farm more Ore to buy some Exp Candies or something.
For Max Raids, depending on the randomized number it could be high amount but usually randomized