How to configure three routers that are connected in series?

Question

Computer networks

There are three routers, all connected in series, that is, the second to the first, and the third to the second. If you just connect them, then the Internet is distributed and everything is fine, if you connect a PC to the second, then 3 router stops distributing the Internet, and if you connect to 3, then everything works fine. If the first one is 192.168.0.1, then what should be done with the rest? I'm useless in this thread

Answer 1

one is a router. all others work as switches. all cables will be connected to the LAN connectors.
if the operating system allows, then switch the WAN port to LAN.
the option is correct: if the tasks of internetwork routing are not expected in the future, then sell them on Avito and buy switches (more ports will turn out).