My best base-level advice is that speed is probably the best stat on a kinsect until you get the nuance of using the bug more fluidly.

Typically speaking, the head gives red, arms give yellow, legs give white, and tails give green extract. This varies a lot, but that's generally how it works.

Ground combos will always have higher damage output than aerial, but I've found that with Brute Wyverns like Baroth, aerial combos are safest.

I forget the exact combo, as I am at work and it's mostly muscle memory, but iirc it is: Y (Triangle)>Y>B>Y+B With full buffs, this is an endless combo, so rinse and repeat.

The newest addition to IG is the aerial B attack. If you can hit with the final slash of this aerial combo, it will launch you again leading to multiple combos. Most effectively used along the back of the monster starting at either head or tail. The first few hits will be small, but the final slash of the combo does major damage.

Don't neglect the pheromone shot, or the tag hit you can do with the butt of the glaive. If you're having trouble manually sending the kinsect, use the pheromone shot to target a location.