Thank you alchymyth! I managed to solve this. I was way off… it wasnt the front page but the custom assets I placed on index.php which showed right under the sectin that I deleted by mistake which included <?php if(is_category()) { ?>, <?php if(is_tag()) { ?> as well as the whole <?php if (have_posts()) : while (have_posts()) : the_post(); ?> so the problem is solved by re adding this section to the index.php page and using if (is_front_page()) fucntion to hide the custom home page assets.
your steps above will definitely help next time such a thing happens.