Page category

Hello,

I’M french, sorry, my English is bad.

My site: https://infos-foot.net/wordpress/
Page category: https://infos-foot.net/wordpress/ligue1-ligue2/

So I custom category.php to display articles but it does not. I put this code:
<? my_query $ php = new WP_Query ( ‘category_name = <? php single_cat_title ();?> & showposts = 1 & offset = 1’);?>

<? php single_cat_title ();?> displays normally the category but here no, is articles of one category, default category

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I have a second problem, I want to display a news on the hour when the news of today or the date if the news is not wrote today, what is the code?

Thank you in advance