I highly doubt anybody would slam you for buying a gaited horse just because you're a beginner rider. Physical problems are many times the reasons some of us old trotting folks went to gaited horses
What does raise my eyebrows is this:
he was herd bound and left to pasture for a year before I got him, he will try and go places or turn around then it becomes a struggle.
This type of horse and a beginner rider are not a good recipe. But you have him so, setting aside the last few posts that are clearly steering off the gaited path into the trotting & racking ditch, the following is spot on:
You don't need a "gaited horse trainer." You have a "horse behavior" problem, not a "gaited horse behavior" problem.
You need an instructor who can help you improve your equitation skills. That instructor need not be specifically familiar with gaited horses. They do need to be good teachers. This is a problem that can be solved by most competent riders. Become a competent rider and you can solve your own problem. I'd bet a good instructor will help you when they see you are ready for the challenge.
Your need is simple: become an effective rider. Good lessons and personal application will get you there. Then you can address this, or any other, routine issue with the horse.
Good luck in your program.
In addition, there may be a reason for the hackamore. Does the horse still have his wolf teeth by chance? How about palette height? Tongue thickness or tongue damage?
My friend's TWH had his tongue nearly severed off (I'm not kidding) by a so-called trainer before she got him. Her first thought was to put him in a hackamore but he wasn't happy so she called the Mikmar bit company. One hour and $80 later she had what they felt was a correct bit for this horse being mailed to her. That was three years ago and he's still in that bit.
When I bought my now 18 yo TWH as a 2-1/2 yr old, the Sellers, who were dealers (and pretty decent folks given they bought and sold) and experienced riders, said the horse would not ride with a bit in his mouth.
They weren't kidding. I tried everything the first year from low port curbs to snaffles, to a three ounce sweet bit. He was not a happy horse.
I put the mechanical hackamore back on him and he's been wearing it ever since. He's never tried to run away, does "whoa and go" as good as any of my others that wear bits, and rides thru the woods on the same loose rein the others do.
Hackamores take a very very light hand as they emit pressure in several places, including the poll.
With a bit, you will have to learn to "stay out of the horse's mouth". With a hackamore it's "get off those reins".
So yes, lessons from a qualified and ethical instructor are in order for you and your new horse