title: how to update layout xml in Magento 2
body: <p>I am creating a custom theme for Magento 2. I need to customize the layout existing in app/design/frontend/[Vendor]/[CustomTheme]/Magento_Theme/layout] whose name is default.xml.</p>
  
  <p>I have changed it by adding and changing some things, however, changes are not taken into account. I always see the original layout.</p>
  
  <p>I have disabled cache, however, just in case, I have flushed it but it was unsuccessful.</p>
  
  <p>How can I reload the layout? maybe it was stored in database, but, how can I refresh it?</p>