Time Machine failed to do backup. What are the alternative backup software?

Startup disk and TM backup drives are checked with Disk Utility. Other Macs are doing TM backups on those TM backup drives smoothly via Wi-Fi or GbE. So I think it's the OS X of the MBP making the trouble.

After working with Apple's product specialists for over a month, one of them used Shared Screen to fix my MBP and it worked for one day, and stopped working again and the last Apple product specialist told me to re-install OS X on MBP and confirmed me that upgrading to macOS Sierra 10.12 wouldn't make the TM work again, blah blah .... I left MBP to retry TM backup days and nights. Eventually, it looks like a miracle: Time Machine for the MBP works again over WiFi to the external USB drive connecting to the MacMini Server (also on macOS Sierra 10.12), though replaced by a new encrypted backup.

Having said that, every time a major OS X upgrade in the last 5 years, all Macs have their TM backup reported verification errors within a month. I strongly believe Time Machine (version 1.3) needs an overhaul!

I know where you come from. I agree that traditional wisdom tells us to avoid backing up via Wi-Fi. Obviously Time Machine v1.3 works better in 802.11n and / or at a small scale of data size. The success of getting the 950 GB new backup done was completely on Wi-Fi, while the verification error happened were on GBE. Quite controversial, isn't it? Well, we cross our fingers that TM next version is more scalable, and restoration should be more intelligent than a manual restoration of cherry-picking individual files.

Sometimes we need to trust the technology and take calculated risks. But TM takes too long to release an overhaul already. Verification error, for example, should be something that point out and isolated, rather than abandoning everything and perform a self-destruction, rather than containing damages to minimum! This is a weird mentality of data protection.