post category by page title

is it possible to display all post from one category by the page title.

i set my page as same as my category so i can display all my post on the page.
i cant seem to find the code from my widget > categories so i can just put it on my category template.

also tried this is one by i think it only display one category i need some dynamic ones.

<?php
$categories = get_categories();
foreach ($categories as $cat) {
if ($cat->category_parent != 0) {
echo '<span style="padding-left:10px;">';
}
echo 'category_nicename.'/">'.$cat->cat_name.' ('.$cat->category_count.')';
if ($cat->category_description != '') {
echo ' - '.$cat->category_description;
}
if ($cat->category_parent != 0) {
echo '</span>';
}
echo '
';
}
?>