I wouldn't give you castinghub - it's a waste of your time and money. The industry doesn't work that way where you can hire an agent to send in auditions for you. Sorry.
If this really is your dream, you need to talk with your parents and learn how the industry really works. There are a lot of scams and rip offs out there. Here's how casting works.
The company (like Disney) hires a casting director (CD) who has the job of finding qualified actors to audition. People invest a lot of money in their productions so they trust that investment to trained and experienced professionals - they're not looking for just anyone off the street. They don't hold open auditions that anyone can go to - it's just not an effective or efficient way to cast a show.
Instead, if a CD personally knows an actor they think will be good for the role (either a well-known actor or just a "regular" actor they know) they will invite them to audition. A CD can also write a "breakdown" (a description of the project and the roles to be cast). They provide the breakdown to licensed talent agents.
Agents then review the breakdowns and submit actors for roles. To submit means to send in an actor's professional head shot and resume listing their acting experience, training, special skills and lie is to their show reel showing their previous screen work. If the the CD is interested, they can invite the actor to audition.
Understand that you can't just hire an agent - it's more like they choose you. Casting directors go through agents because agents have basically pre-screened actors and are representing the ones who are most marketable and can work at a professional level. For minors there are additional legal restrictions and requirements like work permits and trust accounts.
Then there are legal and immigration rules if you're not a US citizen. (Basically if you're not a US citizen you can't legally work in the US with a green card or work visa - so you wouldn't be able to audition for things without those). Again - a lot of rip offs prey on kids who really want to be "discovered" and be on Disney.
But it doesn't work like how they hoped. By talking to your parents, getting quality training and experience and learning the realities of the business you can work toward your goals. Good luck.
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