How to show one after another dynamically from the list in the carview once the button is clicked?

This is a list and I want to show data one after another dynamically from firebase once the button is clicked, also the same data shouldn’t show again.

can anyone please help me with is?

Can you share the screenshot of block when the data is called?

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See this guide

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i didn’t understand this

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in this i want to show data one after another from firebase can anyone please help me?