It’s pretty difficult to just see a screenshot of a subset of a fairly complex app and diagnose what might be going wrong. Can you try to create a simpler, complete app and ideally provide a screenshot and a share link for that project? That would make it much easier for folks to help.
The other blocks aren’t relevant for that issue. Basically, the items are saving in the list correctly but when the app opens again it only gives me the first item of the whole list.