Impulsive actions are not good when it comes to gambling because you have to think about every step you take. It completely depends on strategy, but in some parts strategy is needed to support this luck. We also don't know when luck will come, this is already set in the gambling system. Luck is a secret, but when we gamble often, we will get closer to that luck.
I think that if we gamble regularly, the more knowledge and experience we have in gambling, our winning rate will increase.
Purely depends on what gambling game you're playing. I don't think it would make much of difference to a pure-luck based games like dice, roulette, and anything similar. For sports betting, experience and knowledge may have a slight advantage but the odds would make things a little complicated and challenging for you to decide where to place a bet.
Well, I can't be sympathetic towards a gambler who losses everything, because first of all they have already made a choice and those are just to consequences for what they have done recklessly.