WiFi Error: “Failed to connect to network” - Google Pixel 3xl, Android 11

My Google Pixel 3XL was working perfectly fine and now it refuses to connect to wifi. It just says "Failed to connect to network" whenever and however I try. I'm not running a custom ROM. I have not installed anything new since it was working - it was working fine and then it wasn't I haven't physically damaged my phone, wifi seems to be the only thing effected, all other functions are normal as far as I can see Here is everything I've tried: I've checked that the wifi router works by testing it with other devices. I've tried connecting to new SSIDs that the phone has never met before I've tried conneting in safe mode I've installed the latest updates to my phone and tried again This old question suggests that I delete a wifi config file: https://android.stackexchange.com/questions/29973/wifi-error-failed-to-connect-to-network I cant access that file, probably because I'm not root. So that is probably not going to happen. The next thing to try is a factory reset. But I really really want to avoid that. Do any of you have anything else I can try?