What can I upgrade / do better?

This is my current build. At Kinglike 3-5 atm

Kinda p2w as I own all slimes. Minus Blini cuz I missed his event (cuz I didn't play during the holidays) and the sss slime. No purchases besides that and the monthly thing.

My companions have two "cats" in them for the bonus (one frog and the dschjin) the snail has a "frog" tag Traits as seen in the pic.

To be honest: I have a bunch of keys for the ring thing but I have no clue what the current thing is with the rings :'D

I feel like I could definitely "upgrade" this or change stuff. But I do not know how.

Help is very much appreciated!