WordPress Child Theme Stylesheet being loaded before Parent’s minified .css

Is the $parent_style variable in your the code literally $parent_style="parent-style";?

If so, that’s your issue. It looks like you’re using the example in the codex here and that’s fine but you may have missed this bit right below the snippet:

where parent-style is the same $handle used in the parent theme when it registers its stylesheet. For example, if the parent theme is twentyfifteen, by looking in its functions.php for its wp_enqueue_style() call, you can see the tag it uses there is 'twentyfifteen-style'. In your child code, replace the instance of 'parent-style' with 'twentyfifteen-style'

In the case of the Customify theme, the “$handle” is built in a PHP function making it a little confusing. After looking at the theme code, it looks like the style sheet’s handle is 'customify-style'.

With that knowledge, try replacing

$parent_style="parent-style";

with:

$parent_style="customify-style";

Disclaimer: I’ve only glanced at the theme’s code, the style’s handle may be different than what I’ve written here. If that’s the case you should attempt to find the actual name the theme’s style sheet is registered or enqueued with.