Every avid #macOS user must use the native app Time Machine to take regular backups of their machine. Time Machine takes the backup of the entire machine as and when it is connected with Time Machine Hard disk and takes hourly backup of your device if it stays connected with your machine.

Hard drives crashes randomly which at times can lead to critical data loss. If you are someone for whom data is more valuable than the machine itself, then invest in a new Hard disk and use it as your Time Machine Hard disk.

Personal experience - I had accidentally some important files, I could recover those almost instantly. On one not so fine day the machine wouldn't boot and I had to get into recovery mode -- Time Machine came to rescue.