My question is: there is something to learn about roulette gambling, or just luck in this game.
First of all there are many types of roulette games.
The most popular in the Bitcoin casinos are the American and the European.
And also most important is against whom you are playing? Many Gambling sites offer playing against the house and some against players.
So the biggest question is whether you need to learn some tactics or strategies before playing the game? Then the answer will be no.
No strategies or techniques actually work in this game. All things that matter is luck.
But yes before trying the game, make sure to know how the game works, this will prevent you from placing wrong bets.
I do consider it is pure based on luck as you can simply click on any colour/numbers/odd-even and let it roll. If lucky it comes the same number at times or else one can keep trying it just might not even come even after 100 rolls. I do play this game for fun and its quite an entertainment just not to think much even if you lose as there is no guarantee as such of winning in any of this games.