Confused on how to fix "Category:" in title

So I tried to find a way to remove “Category: Journal” and “Category:Review” to just say “Journal” or “Review”. From looking for title.PHP, looking at category.PHP, and other methods to find snippets similar to
`add_filter( ‘get_the_archive_title’, function ($title) {
if ( is_category() ) {
$title = single_cat_title( ”, false );
}
return $title;
});`
so I could fiddle with the code to remove category. Since most sites listing help recommended going to the theme specific support, I decided after awhile to hop over here. http://www.furzballed.com just select journal/reviews under blog to get an idea of what I want to remove from the title.