Slick Slider not working

I am using PHP 7.0 and I have slick slider installed. I can’t get it to work at all on my website. This is the address http://aya-bochman.s145.upress.link/
I need the About Us text to be a text slider, and also the Wonder Woman Image on top to be a slider of images.
Can someone help explaining me each step on how to do it? I have searched all over the forums and tutorials and videos and I can’t find anything that helps.
Also, when I check the console for errors this is what I get:

“slick-init.js Failed to load resource: the server responded with a status of 404 (Not Found)
jquery-migrate.min.js?ver=1.4.1:2 JQMIGRATE: Migrate is installed, version 1.4.1
slick-init.js Failed to load resource: the server responded with a status of 404 (Not Found)
2 main.js Failed to load resource: the server responded with a status of 404 (Not Found)”

Please help me, I need to get this site going as soon as possible!