Everything stops working because of my keyboard!

I have a tough problem YouTube or google searches don’t help, I’m using a ZTE speed because my current phone is broken, this was my old phone and worked great two years ago when I would mainly use it, but now I have a lot of issues, I always get a notification that the “launcher has stopped”, whenever I try to connect to Wifi, settings stop i have tried everything from factory reset-ing the phone and clearing data, I also cant sign into any google accounts because of this problem, I dont have a laptop of my own so rn im using my schools chromebook its getting me nowhere since I cant download new keyboards or a new launcher to my phone, any suggestions?

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