Start with employer rules. Use only approved apps for care. Hide lock-screen...

https://wiki-wire.win/index.php/What_Should_I_Do_If_I_Keep_Choosing_the_Wrong_Email_Account_When_Sharing_Files%3F

Start with employer rules. Use only approved apps for care. Hide lock-screen previews. Set on-call alerts so key calls get through and routine pings wait. Before sharing a photo, file, or note, check the account you use and confirm it’s right