Since OS 12 I cannot login. too my US Bank. I can log in with chrome. but not with safari.

Please clarify: macOS 12 Monterey? Or macOS 10.12 Sierra? Big difference.

Hello. The latest version of Safari available for macOS 12 is old and is no longer supported. It is likely that your bank's website no longer supports this web browser. Depending on the age of your MacBook, you can try updating to a newer version of macOS or otherwise continue to use Google Chrome. Google Chrome still supports macOS versions 10.11 and earlier, so this may very likely be your best choice.