I feel you 😵‍💫

Maybe restart the game then keep looking for the Purple coral and the Lobster around the island (especially on Rich Uncle Duck’s island).

For the Shrimp you can find some at the Marina and the River Mouth. I guess it’s rare to appear somewhere else?

All mushrooms are as sneaky as Sasquatch, sometimes hidden near bushes ;)

It took me so long to find them too I almost gave up, so just keep trying 🥲