Regarding tretinoin and azelaic acid, you absolutely don't need them if you have good skin. these r very strong active ingredients that shouldn't be used on the face unless absolutely necessary
Azelaic acid is only needed by those with closed comedones and excess sebum
Tretinoin helps with acne, acne spots and photoaging, but you're a teen and these aren't relevant yet
so I don't recommend including any active ingredients in your routine without a dermatologist's prescription.
As for facial care at your age, you only need:
1. Gentle cleanser
2. a light moisturiser without silicones
3. SPF make sure it's non-comedogenic
Most products with silicones can clog pores and lead to closed comedones, so be careful