awwwwww he's just being an energetic puppy! Are you able to take him outside and let him run around or take him for walks? If so, this will help with some of that energy he's got. Has he been neutered yet? That might calm him down a bit and at least stop the humping.
The biting will improve once he's done teething, but in the meantime, make sure you provide him with lots of things he can chew on such as toys, flossies, bully sticks, etc. You can teach him not to bite by making a yelping sound like dogs do when they get hurt. It will get his attention, then you can tell him in a stern voice "NO!", but don't yell at him. I think yelling just upsets them and makes them confused and causes them to just keep biting. I used this method to teach Jake to stop biting and it worked. He rarely bites anymore at 10 mos. ...see? It DOES get better!
I'm sorry he's not bringing you any joy. Try not to stress out about it and just keep telling yourself that it WILL get better. He's just a baby and all he needs is consistency in training. Make sure he gets lots of exercises, play fetch with him.....that usually wears them out. Try to hang in there!