How to backup my Mac with Time Machine. or has Apple taken that away from us?

Follow these steps

1. Connect an external hard drive to your Mac. Make sure it has enough space to store your backups.
2. Open System Preferences from the Apple menu.
3. Click on "Time Machine."
4. Turn Time Machine on by clicking the "On" button.
5. Click "Select Backup Disk" to choose the external hard drive you connected earlier.
6. You can choose to encrypt your backup disk to add an extra layer of security to your backups. To do this, check the "Encrypt backups" option.
7. Once you've selected your backup disk and chosen whether to encrypt it or not, Time Machine will start backing up your Mac automatically.

Describe the step in Back up your Mac with Time Machine - Apple Support that does not work as described.

... or because it’s my malwarebytes protection.

Since you are in doubt uninstall it. You don't need it.

No, they haven't taken that away.

Back up your Mac with Time Machine - Apple Support

Note that I was able to find that article by typing "backup mac time machine" into a search engine.