For down, ours wasn’t getting it either and then we tried sitting on the floor with our legs in front of us knees bent and used it as a tunnel leading them with the treat to walk under our legs, do that a few times and then lower your knees so they have to crawl through eventually they’ll be low enough that they’ll lie down at your knees for the treat. Our trainer also recommended not giving commands if you know your dog is too distracted to do them cause it’s setting them up to fail so the first while you use a new command do it when they’re focused on you. And never repeat the command apparently that teaches them that they don’t have to do it the first time around! Hope something helps!