How do I make a new iCloud account or email

If all you want is a new address you can add up to three 'email aliases' - these are additional addresses (not accounts) which deliver into the same inbox as the main account. (In fact it's a good idea to give out alias addresses, rather than the main address, because if they attract spam you can easily change them.)

You should be aware before you start that once you've created an alias you cannot turn that address into a full iCloud account or move it to another account.

More information on aliases here: Add and manage email aliases for iCloud Mail on iCloud.com - Apple Support

If you really want a new iCloud account you will need to create a new Apple ID at https://appleid.apple.com and then sign into iCloud with it in Settings.