i lost my iphone 15 pro max 256 gb, my question is how to recover all data

You restore your new device from the backup you have been making from before you lost your phone.

Didn’t make routine backups?

Your data is gone.

Assuming that you have been backing up regularly, you can restore everything from your current backup on iCloud, a Mac or PC.

However, if you have not been backing up, unfortunately you have nothing to restore.