Typically a lender such as bank charges personal loan by flat rate with fixed monthly repayments according to tenure offered. This is quite a common practice in Malaysia.
Flat rate vs Effective rate
Do take note that the rate offered by flat rate may not reflect the true interest rates of the loan. Some interests offered looks unbelievably low flat rate and this may not be true. Flat rate is daily robbery while some developed countries have banned this practise.
Are you a government or GLC staff ?
You can even find much better personal loan deals with better rates and longer repayment period if you are government staffs , civil servants or GLC (Government Linked Companies) staffs. There are a few Malaysian banks offering personal loans only to government staffs and related GLC where your repayments can be done via auto deduction directly from employer.