Your cost of living will vary depending on your own comfortable lifestyle. No one have the same definition of their decent living. The best way to make it worth is whether your lifestyle can match the same way as your own lifestyle in your home country. Nevertheless, according numbeo.com, the estimate monthly expenses for a single person at AED 3,127.02 (without rent). You can find better job with bigger salary. Just check vacancies on Jobsora
https://ae.jobsora.com/jobs-abu-dhabi there are many fresh variants.