What are my chances to get a job as ESL Teacher if I am a non- native english speaker but have TEFL certificate?

good, when my accent is well i have a big chance

Countries where native speakers are willing to work, your chances of getting employment are remote. Places, such as Thailand and South American countries where native speakers are somewhat reluctant to work, you have few chances.

From my research, it depends where you want to teach.  As a non-native English speaker, and a non-resident of US, Canada, UK, Ireland, South Africa, Australia or New Zealand your chances of finding a job in Korea, Taiwan, Vietnam and China are slim.  You're better off applying to jobs in South American, and Eastern European countries.  Where were you thinking of teaching?