British citizens (this is your case as you have acquired British citizenship) who have children (less than 18 years old) living outside the United Kingdom can take them to the UK through the Child Visa, which falls under the Family visa category.

The UK Child Visa, is a type of visa that allows citizens or residents of the United Kingdom with no immigration restrictions to bring their non-EU child in the UK. Therefore, the main criterion for a child to be eligible for this type of visa, is to have one of their parents already residing in the UK.

Your child will apply for indefinite leave to remain based on having a family member settled in the UK (as a British citizen). See more here: https://www.gov.uk/indefinite-leave-to-remain-family/child-family-visa