yes, luck plays a role
but instead of relying only in blind luck one can prepare and move and try to reach lucky through preparation
it's a possibility too
not always easy, but possible.
We should learn lot of things in gambling like a pro or the other word is experienced gambler will always have edge over new players in lot of ways like he can understand some strategy based games more comfortably and can limit himself at many points or other benefits with his luck giving him profits.So yes we should always progress while learning.
Strategy is just a minor advantage but still it depends on luck to win regardless if you are pro or newbie. The only advantage of pro players to newbie is just they are already exposed to risk which they can handle it easily compared to newbie that always panic and distracted once lose streak happened. Strategy like Martingale and whatsoever that involves on bet is just a way to play gambling but it doesnt increase the outcome of the game since the result is random.
There are many players who are very strategy based,and some don't believe in strategy and even though the game is purely random these things can give good results.
Although I am a person who believes in strategies but not that they are 100% effective,but it is better to play with some strategy than to play in an uncontrolled way,sometimes it can work but it is not something that can be trusted, that's why I always It is better to control the amount of money to bet, it is better to allocate the money willing to spend and not go beyond that, because otherwise it creates many more problems.