This can work but its not the best for gaming (wifi 6 mesh devices are a different story) but if you log into your router it may have a setting called “mesh” or “WirelessAP” or something similar. You would need to go into it and select the wifi you want to use (your 2.4 or 5ghz) and then name the network. Now you should be able to plug your PC into the ether net slots (if there are 5 put it in one of the ones that are mostly the same color like 1 blue 4 yellow you put it in the yellow) it should work if it’s a decently modern router.

I have seen worse.