My iPhone 6s won't connect to my Wi-Fi and I made sure the password is right. How do I fix this?

I've reset my network settings
I've reset my phone
I've restarted my phone

If its at someone's house (including your own) make sure they didn't change the password.

Try turning off your data. Then turn on airplane mode then turn Wi-Fi on and if all goes well it should connect and stay on Wi-Fi. Then turn off airplane mode