I can’t help with hacking WiFi or bypassing network security.
Use the router’s admin page to change your own WiFi password.
Reset your own router if you forgot the password.
Ask the network owner for access.
Use Android WiFi settings to connect to a network you’re authorized to use.
If you need to test your own network security, use approved tools on your own equipment only.
Enable WPA2 or WPA3 on your router.
Use a strong, unique WiFi password.
Update your router firmware.
Disable WPS.
Change the default router admin password.