Sneaker shields work wonders, put them in your shoes with some duct tape strips and you can take them out and put them in other pairs. It even works on shoes that crease the most like Jordan 1s and 3s...
To keep away from creasing shoes,first avoid wearing that type of shoes, because it looks odd.The shoes has patch there from creasing. If you wear that type of shoes, they will eventually crease. The best you can do is slow the creasing process.
The best thing you could do is change how you walk to make the shoe touch down flat, but I wouldn't recommend as it makes you look like a duck!
If you are looking to wear them without creasing, definitely look at Sneaker Shields. They are, by far, the best way to prevent creasing. I have them in pairs from 5-6 years ago and they still could pass as DS.