This is what I use for a cancel macro. Nothing says it has to be done exactly this way.

[gcode_macro CANCEL_PRINT]
M220 S100 ; Reset Speed factor override percentage to default (100%)
M221 S100 ; Reset Extrude factor override percentage to default (100%)
G91 ; Set coordinates to relative
{% if printer.extruder.temperature >= 170 %}
G1 F1800 E-1 ; Retract filament 3 mm to prevent oozing
{% endif %}
;if all axis are homed, lift the hotend to leave room for hot filament to ooze and to keep it clear of the bed.
{% if printer.toolhead.homed_axes == "xyz" %}
G1 F6000 Z10 ; Move Z Axis up 10 mm to allow filament ooze freely
G90 ; Set coordinates to absolute
G1 X0 Y221 F1000 ; Move Heat Bed to the front for easy print removal
M84 ; Disable stepper motors
{% endif %}
;set part fan speed to zero.
M106 S0
;bed and hotend are left at the print temps in case I want to restart.