whether to play blackjack using the martingale system is very good?
I tried, but I lost. probably due to lack of large capital
And I think, since blackjack has a higher edge than dice or any other gamble, so its better to play something where edge is lesser, if you intend to martingale.
Not true. Blackjack has a ~0.5% house edge, while dice mostly has 1%.
The reason why not to martingale with blackjack is that on 'average hands' you lose something like 55% and lose 45%. The reason the house edge is so low is that blackjack pays more then 1:1