A YMCA is not a Taekwondo Association, but a location where Taekwondo may be taught. These classes are done outside the realm of an official Taekwondo dojang (school), yet should be connected to a central authority and governing body through a well established chain of command. The person teaching Taekwondo at a YMCA might be qualified and certified as a Black Belt and/or Taekwondo Instructor, or they might not be.
Any rules pertaining to stripes on a belt would be at the discretion of that Instructor, and the affiliated Taekwondo organization (if any). Each Taekwondo school and association has different rules and procedures pertaining to belt color, order, and stripes, so it would be best to ask your own instructor. While you are at it, check their credentials to verify legitimacy with the backing of an established Taekwondo Federation.
That depends on the school and style of karate. Orange belt is usually pretty low and can be on one side or the other of the yellow belt. How many stripes will depend on the school.
That will depend on the school. Not many use that pattern and it is not traditional.
Black belt is the highest. Though traditional Okinawa karate uses a red and white belt to indicate 7th and 8th degree black belt and solid red for 9th and 10th. Many American schools use the red belt as a kyu level below black belt.
There are tens of thousands of karate students in the US alone.
there are many different types of karate and they are all created by different people
You don't need to win them but in Kyokushin Karate you have to do 3 battles.
It depends on you're natural talents and on the belt you're trying to achieve
1000000
That would be none, as Karate is not an Olympic sport. Taekwondo is in the Olympics.
Two, it requires a teacher and a student.
A karate belt is typically many layers of material sown together with many stitches. The simplest thing in your case, if you can't borrow one from someone is to use a sash instead. Just fold it into a strip about two inches wide.
Karate effects people in many ways. Some good. Karate teaches respect and self-defense. It improves self-confidence. A good teacher will be sure that the students understand the right way to use it and the right times to use it. There can be BAD things about karate. 1. Injury is a possibility, usually because 2. Teaches dangerous moves that most kids use improperly which means they are not paying attention to class and are not learning what is being taught. In my own personnel experience a family member threatened me with his karate. I also noticed bad behavior since he started karate. And in some cases, people will use their karate skills to intimidate other non-karate people. A person might intimidate another karate person with their belt level. These types of people are not learning the martial art, but simply the martial skills associated with the martial art. They give the art a bad name and are not welcome in my school!