Best way to display data from another collection

Hi Folks
I’m not sure if I’m going about this the right way.

I have fixtures entered into a collection, and on the ‘selections’ page, I have the below filtering happening
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Which is working correctly, I then want to post that displayed data into the ‘selections’ collection.

The ‘round’, ‘day’, ‘opposition’ and ‘home/away’ are being displayed in a repeating container with paragraph fields. I’m struggling with writing those fields back to the database.

Using the ‘day’ paragrpah as the example (the others are essentially the same), the properties of the paragraph are
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The flow logic for ‘set page variable’ as
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The button of ‘create selection’ is defined has the ‘create record’ flow function, set as
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with the custom object defined as
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Which has now got me thinking, is this the best way to do this?