Execute comamand help
execute unless entity @e[tag=gz-a4-block,x=0,y=60,z=0,distance=..1] run execute positioned 0.5 60.0 0.5 unless entity @e[tag=gz-a4-block,distance=..1] run execute as @e positioned 0.5 60.0 0.5 unless entity @e[tag=gz-a4-block,distance=..1] run
Which is best comamdn to execute if there is no entity with a tag at 0 60 0