Now connect your controller to your PS5 using the USB cable.
Press the PS button on your controller.
Now you’re in safe Mode. Now you can do some troubleshooting and maintenance tasks.
Options in PS5 Safe mode
PS5 provides various options within the safe mode options to troubleshoot and maintain your PS5. Here are some options that you can do in PS5:

The first option is to restart your PS5. When you decide to restart the PS5 into normal mode, select this.
Change Video Output
This option allows you to change the video resolution. Especially if you have some issues with video output like the black screen or frozen screen issue, you can change the video resolution and set the perfect one that suits your TV/monitor. Normally this might not be possible in normal mode.
Update System Software
If there are any updates for the system firmware, you can use this option to update the system software. Here you can use the direct download method to directly download updates from the internet, or you can manually select and install an update from the USB drive. This option will come in handy if you have an unstable network connection.
Restore Default Settings
This option allows you to delete settings without deleting any user data. This will be helpful to undo some setting changes that are causing issues. Most of the time, this simple reset could help you to resolve annoying issues.
Rebuild Database
If you are experiencing any issue with your game like game freezing or framerate drop, this option allows fixing that. So this option will scan the drive and fix the database by rebuilding it.
Also Read
How To Rebuild the Database On PlayStation 5 (PS5)
Reset PS5
There are two options for resetting your PS5. The first option will let you delete all user data and settings. Hence this will restore your device to its original state. This option will not remove the existing OS on your system.
The second method removes everything, including the system OS. So you have to reinstall the PS5 OS system once you do this reset. So you have to choose wisely and choose this method only if the existing OS got corrupted somehow.
Conclusion
So, to sum up, this is how you can enter safe mode in your PS5. It’s good that they have included a safe mode. Hence you can troubleshoot simple issues by yourself without the need for any technical support. Hence this could save some time and money for you if you decided to take it to a service center for tiny issues.