Is ComfortDelGro a good stock to buy right now? How's company's fundamentals and stock's prospects of growing in long-term (say 5-10 years)?

I always prioritize having a moat in my companies. Cdg is facing so much competition, grab, gojek. The result of that is lower profits. Stay away from these companies unless they can find a way to build up moat

That's for yourself to decide after analysing the company. Each of us may have differing views and its best to go with your own judgement.