@TP-Link_Deco can you tell me which Tp-link routers can be switched to modem only mode to avoid.double NAT with your M9 Decos?

I cannot run the M9s in Router mode without double NAT using the Plusnet One modem/router as is connot be set in modem bridge mode. I cannot find details of a modem with 1000Mb port to use as a...