To determine the way for you , evaluate your current situation:
It is important to note the distinction between Fastboot Mode and Recovery Mode. If the user presses Volume Up and Power instead of Volume Down and Power, they will enter Recovery Mode. Recovery Mode displays a list of text options, whereas Fastboot Mode usually displays the bunny logo and text confirming the mode. To exit Fastboot mode, the user can simply press the Power button for about 10 seconds to force a reboot, or use the command fastboot reboot if connected to a PC.
: Once the Oppo logo appears or you feel a vibration, release the buttons.