Some thoughts -
To involve a viewer, I think there must be something unique special or interesting about some of these things :
the lighting
the composition, colors, or design including the camera angle
the particular instant of time of the event depicted (which can tie into lighting)
the specific objects and subject matter
the suggestion of a story or mystery
I think all of the above meshing at once would make a super render. Even hitting strong on one of those categories would make a somewhat interesting render.
To be honest, in the case of this render as it is now, it has a the start of a mystery, but the lighting, camera angle, timing of the moment shown, subject matter, are pretty ordinary.
Maybe there could be more interest or mystery if a partially visible figure was placed leaving or entering just outside the gate, perhaps mostly hidden by the bushes, something like that.
I think something needs to be in the frame ( a bird flying away, a dog stealing a burger, a toy balloon drifting by) that makes it a single special moment in time instead of generic mid day.
Just my two cents - probably others will have different important items. I don't claim my own renders satisfy any or all of the above, but it's still a few of the things that I think go to make some renders more interesting.
