1. You can gain some water and food from bugs u know?
1a. And bugs can be found in barks.
2. You can gain bark from hitting those 'barky' trees.
3. Simply stick to the coastlines. Walk along the lines, u can easily find shellfishes, crabbies, an occasional turtle (look out for cattails like plants), coconuts and bananas (after they spawned which is abt 3 days?). Forget about hunting anything bigger, unless its a monkey tats stuck, which u dun have to chase around - then u r in luck)
4. Stick to simple shelter first.
5. Fire can come later once you can find fats (which can be easily located inside crabbies and turtles.... then again, always squish it so it is more....)
Try these 5 steps for a start ..... u will find wonders.
Else, maybe u r just inexperienced enuf for normal. Try easy.