Hi g.melanie,
There is no any issue with it. You post or search post are displayed here latest first. So the next page will be previously. If you click on previous then on the below bottom there is also a next button. If no next topic then the next button will not be displayed. We have designed our theme this way. If you like changing on it then it needs code customization.
Our theme is compatible with WP Page Navi Install this plugin for numeric pagination.
Thank you
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