It’s all about your seat and the training you put into your horse. If you can ride your horse comfortably with a lose reign, try riding with a halter and see how that goes. But like the previous comment stated, there’s also a bunch of videos on YouTube on how to train and ride your horse with a neck rope. (:
There are videos on YouTube of people who ride their horses without a saddle or bridle and just a neck rope. On there, they’ll explain how you can train your horse to. One of the vids I recently watched is to use a neck rope with the bridle still on and use the cues of the neck rope the same time with the bridle. If you’re going left, put your hands to the left of the horses neck. If right, put your hands right of the horses neck. It all depends on how fast your horse will catch on.