Is this a Google Sheet? Because if it’s AirTable, there’s a better way to do this using their API and filterByFormula.
But if it’s not Airtable, then your method should work with a few changes. For one thing, you don’t need the [gear list] block in front of the [app variable entireList] block. The variable is already a list. You almost never need to use the [gear list] block in Thunkable.
Also, the [list of values] block is slow because it gets every value. So don’t use it twice. And you shouldn’t update a List Viewer’s text items inside of a loop because you only need to do that at the end of the loop.
Try this:
Sometimes these loops are a little too fast. So if that doesn’t work for you, try adding a Wait 0 seconds block after the [if] block but inside the [count with] loop.