Something like this would do:
https://www.ebay.co.uk/itm/Netgear-Orbi ... SwZ~9gZjmF
You don't really want a router, a switch is what you're after. A switch will let your main internet hub sort out the routing just by plugging in ethernet but then you'd need a WiFi repeater. That's a bit of extra faff as is disabling the router function so that you have one single WiFi SSID.
Stick to a good known named brand like Netgear. The cheapo noname Chinese stuff is often infested with spyware. No tinfoil hat required, it is a well known modus operandi especially for webcams.
Find a local spod to set up your network and internet security and ideally, get yourself a VPN. The game is afoot. Your digital life is such rich pickings for bank accounts, pension schemes, eBay, PayPal, credit card info etc. it is where the modern criminals make their money. From their bedrooms or as often as not, a purpose built government sponsored agency. /tinfoilhat