Hi Meganriley98, welcome to the forums,
I’m sorry to hear you’re experiencing issues with this trophy popping for you. Just to confirm, is this the “Island Hermit” trophy you’re trying to unlock?
If this is the case, please also confirm for me if you’re using a game generated island for this trophy. Some trophies will not unlock on custom islands including Island Hermit. More information on trophies can be found here: A Note on Console Achievements / Trophies
If you’re attempting this trophy on the shipwreck island, please return to a regular game generated island to try unlock this trophy. As this is a special island, it may be having an impact on your ability to unlock the trophy.
If neither of the above scenarios match what you have done in-game, please elaborate on what you’ve done to try and unlock this trophy and where you’ve tried it.
[Edit: A followup question, what in-game day were you on when you started trying to unlock this trophy? Have you tried from the begining of the game, or are you playing on a more established save file and are now trying to unlock it after some time?]
Thank you.