How to enter recovery mode on MacBook Pro?

This is Apple's guidance: How to start up from macOS Recovery - Apple Support

Scroll down the doc and follow the guidance for Intel based Macs.

❝Press and release the power button to turn on your Mac, then immediately press and hold these two keys on your keyboard: Command (⌘) and R. Keep holding them until you see an Apple logo or spinning globe.

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If your Mac tries to start up from its built-in Recovery system but can’t, it should automatically show a spinning globe as it tries to start up from Recovery over the internet. Or you can force Internet Recovery by pressing either of the following combinations at startup, instead of Command-R. (Each combination also affects the version of macOS offered when reinstalling macOS from Recovery.)

• Option-Command-R
• Shift-Option-Command-R ❞

Jhow1 wrote:

I can’t get my Mac Pro model 1708 into recovery. What can I do to get it into recovery?

Did the laptop crash with a Kernel Panic? And Is the laptop unable to boot and you are seeing a blinking folder with question mark?

If so, then most likely the internal SSD in the laptop is failing or has failed completely. If you Option Boot the laptop by holding the Option key immediately after hearing the startup chime, then maybe it will give the SSD enough time to initialize so that the system can see the boot volume on the internal SSD especially if you need to recover any data from it. Don't let the system go to sleep or the SSD will likely not wake up & the laptop will experience a Kernel Panic. With each incident it is more likely the internal SSD will fail completely.

FYI, the internal SSD of this particular model laptop (MBPro 13" 2016 & 2017 non-Touchbar) have an extremely high rate of failure.