Few things on the salary.
Cost of living in Malaysia is cheap with the exception of car ownership (they pile taxes on good cars to protect the pieces of shaitt that they build locally)
It is also not suitable for families as local schools are shockingly bad and getting worse, international ones are expensive and getting more expensive.
However, accommodation, utilities, food etc are all rock bottom compared to other capital cities with reasonably OK standard of living.
28,000 MYR will go further than you think and a lot further than it would in EU, Gulf, SIN, HKG etc
Income tax for airline crews is looming this coming Jan, it has been postponed by the gov for the last couple of years due to airline lobbying and currently crews pay single digit % taxes; this will increase to 26% once you are feeling the full weight of it.