Downloaded theme not working

Hi There,

I’ve been trying to change from the default Twenty Seventeen theme to (at this point) any other theme, and it doesn’t matter which one I use its not working. When I try to customize them in the elementor builder )or appearance/customize), I only see my website name on the upper left, and some toolbar like archive and such on the right side of the page.
No pictures, widgets and any other presets added, like its suppose to when installing the theme (Neve theme, and trying to open a webshop with woocommerce plugin)
Its the latest version, URLs are the same, deleted and reinstalled all plugins etc.

Can you please help?
Thank you,
Maria

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