Lag and only TF2

Hey guys, I want to ask, I know TF2 is a low tier game, but that does not mean you won't need a reliable connection. I am far from the router, which makes the game really laggy and nothing registers on time due to a high ping. Would you guys recommend I get a wifi extender or an ethernet wired AP to skip the latency from back and forth transmission? I only play TF2 so whichever is good for the mean time because I am leaving that dump of a place after I have enough savings.