Enneagram tests are not accurate for everyone. They simply help narrow down the candidate types for a best fit. Each test is not only a product of how well the test was designed and constructed but also the test author's bias for understanding each type.
Some people new to the types try to rely exclusively on the tests to determine their type when first encountering the system. Sometimes they get lucky and happen upon the right type right away. Other times, different tests give them different results. Sometimes the same tests gives them different results when they retake them.
Enneagram tests are really only a starting point in the process of discovering your type. It may take some people years to determine their type. It's easy to not only become confused about your type but also choose the wrong type as you begin to learn about the types. This is often because people new to the Enneagram types look only at the surface traits and characteristics when the Enneagram types are really about what's underneath personality driving it.
I've added a several simple Enneagram tests that help determine type preference, dominant type with wing, and Tritype with wings. The tests simply have you choose statements that narrow down a likely candidate or compare types to determine preference. Don't take the results as absolute but validate whether the resulting type is the best fit by exploring what's driving personality underneath for that type. You may also want to take the tests more than once and vary your selections as you do so. This will give you multiple types to explore as candidates for your type. Just remember that tests are sometimes wrong and the determination of your type is ultimately up to you.