Hello@ali_ahmed ,

Welcome to our community.

Here is a setup video that provides step-by-step instructions: TP-Link Router Quick Setup.

Alternatively, you can refer to this FAQ: How do I install TP-Link Archer router to work with a Cable Modem?

In addition, it is recommended that you can reply your question in one post. Then we can reply to your questions in a centralized manner to avoid omissions.

Best Regards.