I'm wondering when to start orthodontic treatment. Is it not a good idea to start after becoming an adult?

My child's teeth are on the uneven side.
I am considering orthodontic treatment.

However, in cases where it starts after becoming an adult
I am worried because I heard that it takes longer.

Depending on whether teeth are extracted during orthodontic treatment
Because they say the shape of the face can change,
I am having trouble making a decision.

Among clear braces and conventional braces
I am also curious to know which method is more suitable for your lifestyle.