This is quite simple.
Websters definition of Skill....
1 a : the ability to use one's knowledge effectively and readily in execution or performance
b : dexterity or coordination especially in the execution of learned physical tasks
2 : a learned power of doing something competently : a developed aptitude or ability <language skills>
Now we know that 1 b does not pertain directly to poker but we can observe that there is skill involved physically when it comes to playing long sessions and playing in different physical enviroments.
But 1 a and 2 both pertain to the skill involved in playing the game of poker.
1 a - the ability to use the knowledge of odds, outs, statistics, personality traits, etc to effectively during the execution of playing the game of poker.
2- a developed apttitude or ability in Math or human nature when applied to the game of poker is a skill.
Now, go ahead and mention your single instance in time examples in regards to poker, with vague references and lack of detail....you can do that with pretty much any sport, game or instance of time. If you do not have the "skills" to look past the generalization of your own examples, and that you even put belief into the human created sense of luck. Then I guess you are actually just unlucky in the sense that you do not possess the skills required to see passed your idea of good and bad luck.