Hello, @mohamed aly,
Actually, our theme supports two types of product pages.
1 (a). Pre-build/Default layout:
If you are using this Pre-build/Default layout, Simply go to Dashboard >> Theme Settings >> Woocommerce(Shop) >> Single product page >> Related products and there you can see the Display Related Products option and choose Disable. See the Screenshot for a better reference: https://postimg.cc/3kgg41pV
1 (b).Custom layout Single Product Builder:
If you are using the Custom layout Single Product Builder then go to Dashboard >Theme Settings > WooCommerce > Single Product Builder > and there in the section Delete the Related product element. See the image for a better reference: https://postimg.cc/jWgsdV8X
2. Actually, our theme supports two types of product pages.
1. Pre-build in this you can enable/disable some options
2. Custom layout in this you are able to create the layout and set the content as per your need.
Here is the detailed video on both points so you can check and understand better. Video Link: https://streamable.com/5j6ysy
Also here is the detailed documentation on these layouts: https://xstore.helpscoutdocs.com/article/68-single-product-page
Regards 8Themes Team.