Here is the WiFi extender that I recommend https://amzn.to/2N6pSH3
What is a WiFi extender – WiFi booster? A wifi extender is what extends the range of a wireless signal from a wifi router. It acts like a bridge between a wifi router and a wifi device, that is outside the range of a wifi router. It’s also known as a wifi booster.
NETGEAR WiFi AC1200 Range Extender (EX6200)