Hi,

1/ To edit the widgets on the footer, please go to Appearance > Widgets > edit widgets on "Footer Column #1", "Footer Column #2", "Footer Column #3", "Footer Column #4"

2/ For add the block videos with youtube videos, please create a Youtube API key and fill it to Customize > General Options > Youtube API Key. You can check more here to know how to create a Youtube API key:

https://developers.google.com/youtube/v3/getting-started?hl=en

3/ Please go to Pages > All Pages > edit the page "Soledad_Home" > and edit that page by use Elementor to edit that section.

Best Regards,

PenciDesign