Home Network Setup - Google Wifi

I am a bit of a lurker, and very much a networking newbie, so looking for some guidance.

At our old house, we had an ubuiti edgerouter+an AP due an apartment building being right across the road and causing issues. It was pretty much plug and play (Had to do very little config) and worked great.

When we moved to our new, bigger house we elected for google wifi plugged straight into the modem since I really didn't want to pull wires in this house for AP's.

Anyway, I am working to cut the cord, and since I have plex pass got an antenna+hdhomerun. Since the modem only has 1 port and the wifi was plugged into it, I was out of ports. I thought I could use the edgerouter with google wifi and am running into all sort of issues (double nat, etc.).

So, any suggestions on how I get get all this sorted? I am going down the rabbit hole of configuring this edgerouter, but really I just need something like the switch that will add ports, but not all the fancy configurations, since the google wifi does that.