Wifi Issues with 14.5.1 How to fix or how to go back to previous iOS

Does anyone have a fix for 14.5.1 wifi issues? It picks up the wifi for 1-10 seconds then drops it (on the home screen the icon goes away). If you go into settings it says that you are still connected but it is wrong. No data transfer. Have tried resetting network settings, phone, entire **** thing. If I could, I would return to previous version of iOS because I am sure there are other issues. Some of those were apps not loading, cell data network, and things I probably have figured out yet. Oh and I can't even sign in. Oh iPhone SE Gen 1