Deco M5
FIXED
If you are still unsure what to do following from an above, this is how you would connect a Hub TWO to the ONT (Fibre modem)
Where consumers opt for their own router solution the ONT LAN cable would go to WAN port of the router device being attached. The Hub Two is no longer required.
The Deco M5 is a router the wireless it provides supports mesh connectivity.
For more details for the M5 refer to the user guide TP-Link Deco M5 user guide
HTH