Move the router to a central, elevated location
Keep the router away from walls, metal objects, and appliances
Reposition or upgrade the router antennas
Update the router firmware
Use the 2.4 GHz band for longer range
Reduce interference from nearby wireless devices
Change the WiFi channel to a less crowded one
Upgrade to a higher-power or newer router
Add a WiFi extender
Add a mesh WiFi system
Install additional access points
Use a wired Ethernet backhaul for extenders or access points
Replace old devices with WiFi 5 or WiFi 6 compatible hardware
Use powerline adapters with WiFi support
Limit the number of connected devices
Secure the network to prevent unauthorized usage