weapons are more important than armour btw, focus on getting the red ant club, the insect axe and the tier 2 hammer so you can start smashing molars. putting molars into mutations first is the best move, then for mega milk molars spend those on resource and healing stack size, arrow stack size is not important. also, try to get used to peeping bugs before fighting them, it shows you what their weakness and resistances are. a weakness to busting for example means your club will do 25% more damage, but of they are resistant to stabbing and you use a spear, you will deal 25% less damage.
a tier 2 armour like ladybug armour is gonna be leagues better for you than an even fully upgraded tier 1 armour like clover. The upgrade stones are finite so early game I'd suggest to only level up weapons and gear starting at tier 2 and saving some for tier 3 :)