I agree about the luck but for the strategy? I think it depends only on certain games. It can be applied on poker, blackjack, on some other card games and also in sports betting. For someone who is serious about winning and making a profit then there is no way they can forget adding a strategy to each of their games but there are some who just wants to test if how lucky they are, and there are newbies who don't know if what strategy is good to use so they just play the game directly.
Other than calculating the strategy, I think it's best to also calculate the odds or our chances of winning, so that we can decide if it's worth the risk or not.
Most of the game provides the theoretical RTP but calculating the odds of winning on games that is pure luck based like slots, dice, plinko and etc is still nonsense at all because hitting the winning bet is still based on chances despite you have the advantage with the odds. I do understand that we should balance the odds of winning to the potential profit when gambling but theres still no way for us to determine when we will win to guarantee profit.
I think playing without doing some calculations and using normal bets is the best strategy to enjoy gambling on those luck based games.