Some MAJOR tips I have is to save your resources; i.e. don't use all your lashing to make multiple of an item. Oherwise you will have to wait a few in game days for the resources to naturally replenish OR sail to another island for more resources until you get momentum.
Stranded Deep is a SURVIVAL/RESOURCE MANAGEMENT game, treat it like one. If you're thirsting, find water (coconut/water still). Hungry? Club a fish or a crab and skin them for small meat. If you don't need it at the moment, don't waste the resources. Set goals and have a plan.
If you are bitten or step on anything venomous/poisonous, craft an Antidote immediately or you will die in a day's time. Medical supplies are extremely important. Fall damage is real; craft a splint if needed. Poison/Venom is real; craft an antidote. Bleeding is real; craft bandages.
Understand the importance of crafting. Learn to use your survival watch. Dehydration and hunger can happen quick. The watch also shows your skill levels and health status.
Find wooden crates as they will help with storage capacity, especially when exploring islands and shipwrecks.
Create a basic shelter and campfire on each island from resources on the island. This will help you with sleep, saving, and the trophy requirements.
If aggressive animals are giving you trouble, turn on PASSIVE mode from the options menu. This will make the "Noahs Ark" inspired trophy more difficult until you turn NORMAL back on, but helps with surviving. (Everytime i leave an island my raft is immediately attacked by a hammerhead or tiger shark).
That's my experience so far! Feel free to subscribe!