If you only take one thing from this post, let it be the . It is the industry standard for keeping data safe: 3 copies of your data: The original plus two backups.
Don’t Wait for a Crash: The Ultimate Guide to Your Backup System
Time Machine is built-in and incredibly effective for "traveling back in time" to find deleted files. 4. Versioning: More Than Just a Copy
Services like Backblaze or Carbonite run automatically in the background. They are your safety net against physical theft or disasters. 3. Automation is Your Best Friend
Use File History to automatically save versions of your files to an external drive.
If something happens to your home or office, you need a copy somewhere else (like the cloud or a friend's house). 2. Physical vs. Cloud Backups
These are great for "cold storage"—backups that aren't always connected to your computer. This protects them from malware like ransomware.