This is a good start! Tdr is a very weird and complex trick/setup that hits a very unique angle compared to linear tricks like a backflip. Your main focus to improving your Tdr is stepping forward into the trick. Since you are approaching the setup horizontally from one side of your body to the other, this is causing your foot to turn more than it needs to. When you step into the trick, your foot should be horizontal (although some people keep it straight). Another thing to focus on is you are turning your upper body too early. That early rotation is partly triggered by the side-to-side entry. When you step into the tdr, your chest should be facing the ground, and it should turn upwards as you lift your back leg up. Definitely focus on stepping forward into the trick and it should help a ton!

Here is a review of an old backflip of mine from 2009. If you are struggling with backflip, this video might address some of your issues.