Which forex broker is recommended in Singapore?

You can find a list of brokers here:
https://www.brokersview.com/brokers
I personally, trade with ,Exness, IC Markets

Anything under MAS regulation.

Take a look at: https://www.compareforexbrokers.com/best-forex-...

There is no "best" or a 1 size fits all platform. Do a little bit of comparison across various platforms. Open up their demo accounts, get a feel of the platforms. You will find one that suits your needs. Hope it helps.

Hope it helps.