Hi, any recommendations on good brokers with lowest commissions for daily trading of options for Singapore residents ? Anyone tried trade station, tasty works, tiger, moomoo besides TD? Thanks.

For Trade Station there's $5 per trade charge for overseas users right + the commission cost?

Tastyworks and IBKR are great for options as well. As for moomoo and tiger, they're still largely in their infancy so, they might not be able to handle complex strategies. For example, covered calls were only rolled out (in beta) on moomoo just a month or so ago.