Thanks... so these are those computer speakers without amplifier right ?

1. surround sound 5.1
2. 2 way Bluetooth capability
3. Calibration mic.
I guess that is my only simple requirement...

yes, built for for computers, u can use for TV, some are quite powerful.
the "amp" is in one of speakers or subwoofer, typically.
that is not simple.
simple means nothing of that sort, just 2.1, vol, treble, bass controls.
for those requirements, start looking at AVRs.
no more few hundred RM but thousands.
it is a waste to have full AVR/home theater if u only use it for netflix dd5.1 unless u buy used/2nd hand.
there are existing threads on AVRs/home theaters.

Already off topic.

But to answer you question simply;

1) Get a set of Q Acoustics 30xx speakers (just for the LCR, surrounds don't matter just get whatever that is cheap since you don't have a high budget), get an entry level receiver like a Yamaha v365.

2) Receivers have bluetooth connectivity. Or if you had been reading, get the pair of Edifier S3300 Pro - has bluetooth connectivity as well.

3) You want a good calibration mic? Get either the UMIK1 or Behringer ECM8000. Learn how to use REW, learn how to implement it into a DSP like minidsp or antimode.

4) Stay away from a soundbar.

yes, built for for computers, u can use for TV, some are quite powerful.
the "amp" is in one of speakers or subwoofer, typically.
that is not simple.
simple means nothing of that sort, just 2.1, vol, treble, bass controls.
for those requirements, start looking at AVRs.
no more few hundred RM but thousands.
it is a waste to have full AVR/home theater if u only use it for netflix dd5.1 unless u buy used/2nd hand.
there are existing threads on AVRs/home theaters.