OP, over the last several years it seems that often in these threads it is the younger person who needs to take control of the communications process, of organizing and bringing the right people together, to solve problems and create new directions.
What you’ve described so far can be confusing because it reads like a jigsaw puzzle with the pieces all spread out and disorganized. One can’t even start solving the puzzle until the pieces are grouped and sorted, so that then they can be aligned with where each should go in the completed puzzle. Otherwise it is just grabbing one random piece after another, and not finding where each should go. Massively frustrating, and much time wasted with no true progress toward a complete picture. Sounds like that is what is happening?
Like others in this thread, before the ‘horse’ question is addressed, you first need to get information and organize the pieces – which are the adults who have roles in your horse journey. Parents, trainer(s), barn manager, etc. You know better who they are.
Write down your step-by-step plan, with a timeline for each step. Don’t forget that the future horse and show budget is a huge part of the plan. Make your plan, budget and timeline flexible and adjustable, because realities will sometimes move things around. You can even do more than one plan, a perfect-ideal plan, and a this-seems-realistic plan.
Prioritize your communications for where to start, who should be the first to hear your goals (parents). Work forward step by step to then bring in the trainer(s), then the future barn manager. And so on. You know better how this needs to work in your situation.
Keep adjusting your goals, budget and timeline as you get more information at each step. But keep the “ideal” alongside for comparison to monitor how far the goal is drifting. In fact, you may need to have some conversations before you even start parts of your written plan.
Start over planning your future horse show life with no ties to the past. What is your ideal? How close can you reasonably come?
After all the pieces are arranged then you can then start the project of looking for a horse. That is the last piece of the puzzle to put into place, not the first. Because you need the right people to help you find the right horse. And at present, that isn’t what is happening. (Which is why you posted this question on COTH! lol )
As it is, you are trying to do the last step, the horse, first. Understandable, because finding a horse would make the goal look as if it is in sight – but if the other pieces aren’t in place, the goal will keep eluding you, even if you find a horse. And you may become attached to the ‘wrong’ horse, one that isn’t the one you should have bought.
I understand this may be new to you and that’s all the more reason to get the adults aligned into Your Team and working with you toward your goal.
Good luck! Please come back in a year and let us know how things are going for you!