Lost my iPhone 11 and now im unable to find it due to offline mode

If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

these are all the options you have

one can't turn on devices from icloud

apple will not give you a new iphone if it's lost or stolen unless you have apple care+ with theft and loss protection

iPhone Theft and Loss Claims - Official Apple Support

This is a user helping users with tech questions, we are not apple and apple do not read your posts here

If you wish to reach out to apple then try  Get Support (apple.com),

or  Contact - Official Apple Support

Don'ts

If the device is removed from an account after it is erased, Activation Lock will be turned off. This allows another person to turn on and use the device.

An example of my iPhone 5 is given in the GIF below. There is no "Undo" after you remove it from your account.

iPhones are designed with strong security measures to protect the privacy and data of their owners. One of the key features that ensure this is the requirement of an Apple ID and password or a passcode to access the device's contents. This means that without the owner's authorization, it is nearly impossible for anyone else to open an iPhone and gain access to its data.

• The Apple ID and password serve as a unique identifier for each user and are used to link the device to the owner's iCloud account.
• In the event that the owner has chosen to set up a passcode, an additional layer of protection is added.
• Additionally, enabling two-factor authentication for the Apple ID further enhances the security of the device by requiring a secondary verification step, typically through a trusted device or phone number, to access the account.

With these security measures in place, iPhones offer a high level of protection against unauthorized access. Even if someone physically possesses the device, they will find it extremely challenging to access its contents without the owner's Apple ID and password or the passcode. This helps safeguard sensitive information, personal data, and ensures the privacy of the iPhone's owner.

It is worth noting that while these security measures provide strong protection against unauthorized access, it is essential for iPhone owners to choose strong and unique passcodes or passwords. This minimizes the risk of brute-force attacks or password-guessing attempts.