I recently moved to a new home, which appears to be oddly wired in that there are almost no other outlets to plugin my Wi-Fi router to, other than in the laundry room (which I've labeled as "router" in my sad excuse of a floor plan photo I've attached for reference). This laundry room has a network access hub which plugs into the fibre outlet via ethernet, and then my router to the access hub. When the router is plugged in here, the Wi-Fi signal in my "gaming room" (labeled as such in the floor plan) is incredibly poor. I pay for 1.5 gig fibre internet and while I realize you rarely get the speeds you pay for, I'm typically only getting \~50mbps download, and at times my pc cant even connect to the Wi-Fi due to the signal being so poor. My motherboard has Wi-Fi 6 and I have external antenna mounted as close to the door as I could get them with little improvement in speed or signal. The only other option is a coax outlet in the corner of the living room (also labeled in my fabulous diagram). However, my current router provided by my ISP doesn't have a coax outlet on the back, only ethernet.

 I am aware I could get a 3rd party router but this would also need to be plugged into the network access hub via ethernet I believe? which I assume would result in similar network speeds. I've looked into perhaps getting a couple of mesh router nodes to help go around the corner to limit the amount of walls my signal needs to go through to reach the gaming room, however I know this is also less ideal as it can lead to decreased speeds. But perhaps just the one node wouldn't effect things to much and give enough juice to make it worth while? I've also looked into MoCA adapters as a means of moving my router, however I'm not well versed in these and I am not even sure if it would allow me to move my router to the coax outlet in the corner of the living room? If it does allow me to do that, would this be a viable solution? 

  
I unfortunately cannot relocate outlets or anything as the house is a rental, and I cannot run ethernet cords all over the place as my wife would divorce me (she doesn't get it). Any ideas, help, or advice would be greatly appreciated! They do not need to be mesh/MoCA related, if there is another solution I'm omitting please let me know! I'm fairly techy, but not necessarily when it comes to networks, so you may need to explain it to me like I'm 5. 

Mesh/MoCA Networks to improve Wi-Fi quality in distant room? Pls help