This is one of my favorites, I’ll try to give some advice. First, make sure to buy healing items from the shop, as many as you can. Second, make sure you’re taking advantage of enemy’s weakness. If you do zero damage on an attack make sure to switch it up, it’s usually for a reason. Use jump instead of hammer etc. May want to consider using different characters in different circumstances too. You shouldn’t need to tattle as much as you do. Last, might want to consider swapping badges. I hope these help. Good luck!

It’s been a while, but for this early in the game you have a LOT of BP. I would put more into health, I think that’ll improve your mortality rates significantly

When leveling, I often prioritize BP and if I need more of the other stats I equip the badges that use 3bp for 3 hp or fp.

I often save the star points to use Sweet Treat which is a reasonably reliable heal if you can get good at it. In certain situations I’ll use the other star powers for high damage.

I regularly switch which characters I’m using and their builds depending on the enemies in the area. Do you need high single target damage or AOE? Are there fliers? Are there spiky things?

Gombella is not bad early game and Koops is quite good IMO. Koops can hit all grounded enemies at once, which is very useful AOE, and Goombella has some decent jumping single target damage.

I feel like a lot of this advice also applies to Expedition 33.

You should only need to use tattle at most once per enemy type, I’m not sure why you would use it after that.