Important, Wifi Connection Failed

I was working on a final for my class when my wifi suddenly disconnected. When trying to log back in, the WPA2 password prompt keeps popping up again and again despite me triple checking that I was entering the correct password. I’ve tried resetting the router and restarting my computer too but that hasn’t helped. I am able to log into the wifi from all my other devices by not my Mac. However, I can connect to other Wi-Fi’s with my Mac, just not my home wifi. I also noticed at the bottom right there’s an error that says “connection failed”. If someone can please help me fix this it would be much appreciated, I cannot complete my final assignment without your help!