Sorry to hear about your frustration. That's totally understandable. Hopefully, these suggestions will help get you playing again.
- First, repair EA AntiCheat. Go to FC26\__Installer\EAAntiCheat\ and run EAAntiCheat.Installer.exe. Choose FC26 and hit Uninstall. Restart your PC and run it again. This time choose Install. Restart your PC again and launch FC 26.
- If that doesn't help, open the EA App and go to Manage > Repair. Let this finish and try FC 26 again.
- After that, the next step would be to run both the EA App and FC 26 as an administrator.
If you're still unable to play, we'll try some other possible resolutions. Let me know what happens. Thanks!