Hello,
1. Product page and brand image. You can disable it in Theme Settings > Shop > Brands.
2. Product category navigation in the shop title, unfortunately, it is not possible. This menu allows hiding empty categories.
3. You can configure the widget view in the widget settings. You need to configure the attribute filter in Appearance > Widgets > Shop page widget area: https://xtemos.com/docs-topic/widgets-and-sidebars/
If you have any questions please feel free to contact us.
Best Regards