Hi,

If you want to do that, you need to use Elementor to config your homepage/pages.

Please install & activate plugin Elementor, after that, you can check this video tutorial to know how to config homepage by use Elementor.

When you use Elementor to config the homepage, you can use element "Penci Latest Posts" > select layout Grid as you want here and custom the words length for post titles here

Best Regards,

PenciDesign