First of all, I know absolutely nothing about all this terminology on this sub. I know what a router is, and I know what wifi is.

Currently, my router is on the 2nd floor, (out of 3 floors, so it’s not on the top floor of the house), and my PlayStation is in the basement. 80-90% of the time I have terrible internet for games down there (scrolling Instagram or YouTube works fine)

I also have 1 of those google wifi devices plugged into the wall on each floor (so 4 in total). I think they’re extensions?

How do I get getter internet down there? With Black Friday coming up maybe I can save some money if I’m buying something (a new router?)

Explain like I’m 5, I’ll buy whatever works