Troubleshooting tips to fix software issues and bugs causing unexpected Mac restarts after waking from sleep include checking for kernel panic, system errors, software glitches, and app issues as common culprits.
Steps like updating to the latest macOS version, unplugging peripherals, restarting the machine, stopping automatic wake, booting in Safe Mode, checking battery health, considering a UPS, resetting Mac's SMC, monitoring Activity Monitor, and checking for third-party kernel extensions can help resolve the issue.
Running Apple Diagnostics, reinstalling macOS, and seeking inspection by skilled technicians are recommended if the problem persists even after trying the initial troubleshooting steps.
If the Mac continues to have sleep and restart issues, visiting an Apple store or authorized service provider for further diagnosis and solutions is advised.