Am 29 and I wich my teeths become as they were when I was 20.
Now I have too of my front teeths out of there places, because of my gum probably
Is there any way I can make them strait?. considering my age.

You need to go to an orthodontist to see if straightening is possible. If so you would likely need to wear braces. This is not something you can do on your own.