Need help fixing Swift UI app algorithm and UI

How my app works. Users save a type of item in a database and select an Occasion for them, Users can then name them, and users can also choose the colours and the category of them.

You build your database over time as you save items. One of the issues I am facing is that I have an option in the app where users can select an "Occasion", and when you press one of these Occasions a sheet appears, and 5 types of items are randomly displayed to users for that specific occasion. The issue is that the app does not follow the algorithm I have created which is for displaying items in the colour-coded rules I have set. And I am getting 2 of the same type of item and colour displayed.

Also when I select other occasions items that are not listed as part of that occasion appear. This would need fixing too.

Inside the sheet, users have 2 buttons "regenerate" and "Confirm" I want you to implement code that when users press regenerate a new set of items randomly appears in the sheet.

I want when users press "Confirm" for users to have the 5 items displayed logged and I have a place in the code where users will be able to see this. Users would need to be able to tap this and be able to preview items once again.

I've done a majority of the work its just a few bugs and algorithm fixes that need done that is above my level