Wi-Fi signal is most effective when your router is placed up high, in a central location, and away from devices such as baby monitors, cordless phones, or other nearby routers.
Equipment age can also affect your Wi-Fi network. Most router manufacturers recommend replace your router every 3 to 5 years.
Wi-Fi signals will usually reach about 150 feet for a 2.4Ghz frequency. Using a 5Ghz frequency, you will get about 50 feet of reach. So, the closer you are to your router the better. Home structure also plays a big part in how Wi-Fi signal reaches your devices.
2.4GHz networks will reach further but have slower speeds. 5G networks will have faster speeds but have less reach than the 2.4GHz.