Slow Wi-fi is one of todays biggest technology problems. Whether its a buffering videos or lagging games (or even no connection at all), it usually comes from simple issues. This is your guide- How To Fix Wi-Fi Troubles
Solution #1 Move your router to a better spot Put your router in the center of your home if possible, and off the floor. Never put it inside cabinets. For aesthetics, you could try simple cable management to hide those ugly cables.
Solution #2 Disconnect unused devices That Roku® TV you have sitting in another room unused? You probably might want to unplug that as it can also contribute to your electric bill, but it can divert Wi-Fi signals from your important devices.
Solution #3 Restart your router The simple turn it off and back on again. This clears all the temporary issues and refreshes connection to your devices. All you should do is turn it off, wait 30 seconds, then plug it back in.
All in all, slow Wi-Fi is usually caused by simple issues like placement and interference. Fixing these issues can drastically speed up your internet without buying anything new.