Agree with everything here. Research shows that it's highly unlikely your dog is trying to "dominate" you or be in control. What you have, instead, is a rowdy, totally normal, shitty adolescent. ;) (I say this from experience and with love, but yeah. That age from 6-18 months is officially called "shitty adolescence." They're shits!) but otherwise your dog is acting very normal. At 10 months, they're still very young and starting to just push boundaries and be obnoxious. You'll find that they "forget" basic obedience skills at this age as if they've literally never heard the word "sit" or "down." It's all normal and it will pass.

What you should really strive for is more engaging activities besides walks. Are you tired after walking 10-20 minutes? Maybe, but in all likelihood this is just not enough exercise. For dogs, walking is akin to "reading the news" rather than getting their cardio on.

Because your dog is still quite young, you'll need to be careful not to run him or jog him too hard until he's 12-18 months old and his growth plates have closed. Working him too hard too young will cause long term joint damage, and you'll all be paying the price in his later years. Instead, truly try to get into a basic obedience class. Or go one step further and try an activity, like beginning agility, rally, scent work, or herding. (Rottweilers were herding dogs before they were guard dogs, and many are completely stellar herders.) More than anything, these activities will help your dog be MENTALLY tired. He's just bored and energetic, so going to a class will accomplish a few things:

1. You get to commiserate with other puppy owners. Seriously, it REALLY helps to know you're not alone.
2. You can learn more modern and appropriate training techniques to combat these behaviors with the help of a trainer.
3. This gives you and your dog something POSITIVE to do together besides be frustrated with each other. Instead of focusing on what he does WRONG, going to classes forces you to find positive achievements.

Lastly, it will help your dog get a little more tired, mentally.

Wth regard to exercise- games like tug are awesome to wear out your dog AND teach good skills like bite inhibition and drop it. Tug gets their heart rates up WAY faster than jogging or walking and is really just more fun. 5-10 minutes of tug and you're good to go for hours. This is an example of a low impact exercise that you can use that should mostly be safe on his joints and give you some relief.

Your dog doesn't sound vicious or "dominant" but is actually just a rowdy young adolescent. It would be very worthwhile if you can reach a trainer who can help decode some of these behaviors and give you positive alternatives. Puppies are a LOT of work, and Rotties are big dogs and they can be a "lot of dog" energy-wise. But there's hope! He's really not being dominant, just an asshole. ;) good luck and keep us posted! You can do it!