As of now, an official English translation for The Breaker manhwa does exist. It's been made available to meet the demand of English-speaking readers. You might need to search on specific comic-related websites or apps to access it.
You need to have a good understanding of both the source language and English. Start by learning the basic grammar and vocabulary of the manhwa's language and then work on translating sentence by sentence, making sure the meaning is accurately conveyed in English.
One way is to use online translation tools like Google Translate, but they might not be perfect. You need to double-check and correct the translations manually.