Oh, this is something that drives me nuts and I remember (writing wise) having an argument with a teacher once about the meaning of a book. When I told her my opinion (which is what she asked for) she said I was wrong and told me what the author meant. I asked her how she knew that as he'd been dead for almost 70 years. I got detention.
Anyway... below is a photo of a painting that I own that I dearly love. I bought it from the artist who had a kiosk in a local mall. I paid him a certain amount once a week (I wasn't working at the time). I would stop by with a cup of coffee and my payment and we would chat.
One day while we were there a man and a woman walked by and saw the painting (with a little "sold" sign on it). The woman who said she'd taken an art appreciation and understanding class launched ito the meaning of this painting. It was all about the abortion issue which was the shuttlecock and the nun taking notes and a "fallen" one hiding in a doorway.
It was quite a story.
After they left I asked the artist if that was the meaning. His response was: "I was driving past this convent a couple months ago and the nuns were playing badminton and I thought it would make a nice painting."
Your work doesn't have to have meaning. Sometimes it can be something pretty or fun. I bought the painting because it made me smile and years later it still makes me smile. I guess you could say that was his unconscious meaning... something to make someone smile.
I realize this doesn't help you but... it is an example of how the beholder is going to put their own meaning into it. that even happens with writers. I've had arguments with people about what I've written when they tell me what I wrote and I say no, that's wrong and they actually say I just don't realize it. Everyone has their own agenda.