Here's a drone view of my house. No real scale here, but keep in mind that we are on one floor and over 5000sqft.Where is the wireless router ? Or is there one ?
Are there 3 or 4 devices ? Sorry about my lack of mesh knowledge
Red dot is where the outside cable enters my home. I have my cable modem there. I do not use that for wifi signal in my home. My PC workstation is hardwired to that cable modem because my office space is there.
I have a hardwired connection between my modem (red dot) and a spot in my kitchen (green dot). That green dot is my first deco mesh. The two yellow dots are my two other deco mesh points.