Archives.php is a template file that WordPress will use by default (if it exists). If you want to create a custom page template you need to create a new template file in your theme. You can read all about it here, but I'll provide an example below. Put this at the top of your new file:
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...then follow it with the custom code you need to display your data.
Then, when creating a new page that you would like to use the above template, you will see a drop-down list on the right that lists all the names of page templates you have in your theme.