If it´s the first time you´re using SVG files in Elementor you have to enable support for it.
Elementor have an article how to enable SVG support.
ENABLE SVG SUPPORT
Using Gutenberg or another pagebuilder?
You can use all the SVG files if you enable support for SVG in WordPress.
(But to use the Basic SVG we have, for that you need Elementor, or another builder that supports CSS filters at the moment).
To use CSS color filters with our Basic SVG,s you need Elementor Pagebuilder (or another builder that supports CSS filters).
All the other SVG,s works in other pagebuilders, Gutenberg, and other sites not built with WordPress.
How do I import an Elementor template on my website?
Elementor have an article you can read HERE
We usally don´t provide any support, How do I… , or make it look like that kind of question?, it is only SVG files and template blocks, and that you must learn to use your self.
But of course, if something is important and specific to the packs, just get in contact and we try to help you.
They are fully editable with your favorite vector tool, if you need exact brand colors.
The images in the blocks are not included in the templates you get, only placeholders so you can use your own images/illustrations
Yes you can use the Basic SVG,s with other builders if they support CSS filter for background images.