how can I get into my iCloud account if I don't have my trusted device or my cell phone to get the code?
I'm trying to sign into my iCloud but can't because I don't have my trusted device or cellphone to get the 2 factor authentification code
This article list all possible options.
(Normally, this is where you’d use one of your pre-designated trusted numbers.)
Get a verification code and sign in with two-factor authentication - Apple Support