Monitor router traffic from PC

I want to monitor traffic on my home router, how to do this? I have a Huawei router. I have searched this question before asking here but most of the sites and blogs just mentioned hacking and other stuff.

I want to monitor all traffic on my home router which I have complete access to. And I don't want to use any paid software. A list of detailed steps will help me a lot because it's a bit confusing for me. I am using Windows as my operating system.

Another solution would be to install a passive or active Ethernet tap between your router and the modem or wall outlet it connects to. Dedicated devices are made for this purpose, or you could simply use a system (e.g. Raspberry Pi) and give it two Ethernet ports. Then, you could run whatever software you want on there and your router wouldn't even need to know it's there, if configured correctly.