In Magento 2, blocks are PHP classes used to interface or make a connection among design and layouts.
We, designers, now and again expect to put the connected layout record into the abrogate block with similar index way as the first when we supersede the gadget block class.
Consequently, to override catalog widget block Magento 2, you want to follow the beneath steps.
For more info, visit https://meetanshi.com/blog/override-catalog-widget-block-in-magento-2/