Do I own the Pictures i upload for a listing?

I created a listing but the brand has been generic. Tried to brand it but has never worked and eventually others began to sell with me. Either way it has started to decrease heavily in sales and I spent hours upon hours editing these photos on photoshop and canva. Will I be able to take them down once i stop selling this product. I don’t want people using them because i have another product i can transfer the concepts over.