You need patience and to keep promoting, but you also need to be intentional about where you place your art on products. You have items where it the artwork just randomly crops where you could have either shrunk it down to make it fit or made the crop in a spot where it doesn't just look like the edges of the image are cut off. What I like to call an "artistic" crop. You need go back to other threads where you have been given advice and make those changes as well.
Your designs are cute, but you need to tweak things on some of the products to make them a bit more saleable. Your designs have to be well thought out and either very unique or very on trend and what the customers are looking for. Take advantage of the customization templates where it works. You have to be the one to put in the work and research for best keywords. I feel like English may not be your native language and that can be a barrier, but keep learning and improving because there are a lot of top sellers here where English isn't their first language so you can do it too. Excuse me if I have made incorrect assumptions on this though.
Good luck!
