Remove category from title

how can i remove category name from page title?

Screenshot_1

Hi!

Create an override for the tpl hook index:title

{if $page_title}
    {$page_title}
{else}
    {$breadcrumbs|fn_generate_page_title:$language_direction:$location_data.title}
{/if}

and in the $breadcrumbs variable remove all its array elements but the last one.

Where can i find the file i need to edit?

I strongly do not recommend to edit the core file, instead create the override for the mentioned hook:
https://docs.cs-cart.com/latest/developer_guide/addons/hooking/tpl_hooks.html#how-to-use-a-tpl-hook

In case you want to check the file itself, please check this one:
design/themes/responsive/templates/index.tpl

Well, i found another way to set page title automatically. I exported the products and in csv i left product code, variation code and product name. I imported the file and product name was set to page title.