Sorry to hear it hasn't worked out for you as you'd expect it to be.
It's true that the Halfbike takes some practice to master, but that's also part of the experience - you really build up confidence with riding more. Of course, it all depends from person to person, but I think that if you scale down a bit and start riding in more controlled areas like parking lots or empty streets you can surely build that confidence to start riding in more crowded areas. Of course, we always recommend using protective equipment, which also has the potential to boost your confidence in riding.
You can also check the YouTube channel by one of our ambassadors where he shares awesome tips on learning > www.youtube.com/channel/UCBFS-EzzPeNFlyXHrePTG0A/videos
Also, don't hesitate to let us know if you need any additional tips, we'd gladly try to help out if you decide to give it a 2nd chance at some point.