The number of times you play a game that is decided before turn 6 is extremely rare. Games like this can happen because we are playing a CCG and some decks are designed to dispatch their opponents quickly, however this requires both a nut hand from one player and a dead and/or hard countered hand from the other. If this is happening to you regularly you either have a deck building issue or a game play issue.
A good example of this is if you watch the HS Masters streams where the game play and deck building are both at a near optimal level, you will see almost zero games that end this quickly (admittedly partly due to the fact that nearly everyone is playing Control Warrior, but even the Tempo Rogue mirror matches are not decided by mid game).
Many people are in fact deluded about how good they are at games (League of Legends probably the worst example of this I have seen) and will blame anything but their own lack of skill or understanding for losing. If you persevere with Hearthstone, question your decisions and critique yourself, you will see you have a lot more control over the outcome of a game than you realise. Players that appear in the top 16 every month don't do so because they are lucky, but because they consistently refine their decks based on their opponents and consistently make correct decisions in game.
What people call “salt” is simply them not living in reality. I see day by day that people simply don’t like the truth about things. And the truth about this game is no exception to the matter. The truth is what op said is fact. Games are decided probably 9.9 times by turn one and that’s pretty sad for any game. And if it’s not that it’s top deck into top deck into top. Or discover Into discover. It’s just stupid. I should not lose to constant top decks by any class. I should not lose to an otk out of nowhere by mech hunter, mech paladin, inner fire priest or any deck. Especially when I’m above 20. Do you think inner fire is good for the game? Or divine spirit? What has it ever brought to this game aside from otk bs? Has the discover mechanic ever brought anything to this game positive? Why am I losing to bloodlust discovered by a rogue deck. Let me say that again. A rogue deck beat me while I was warrior with bloodlust. Does anyone here think that’s fun? Can anyone defend that? Simply because you can’t win a coin flip doesn’t mean you should lose the game. And often times the percentages are way more in your favor but oh gee guess I got unlucky on 5-10 coin flips and lost everyone. Damn such an outplay Simply because you are not lucky doesn’t mean you should lose the game. That’s just stupid. Stop blaming the players and blame the game. Quite sure most people are fed up with the game because it’s become trash. Not because they can’t cope with there “salt” Blizzard is the ones who deserve all the blame. Not people who put their time and money into a game only to get “salty” when they literally cannot win no matter what they do because it’s almost as if it’s not allowed. Or if you don’t have a horseshoe up your ass you will get nowhere in this game anymore. And again that’s not “salt” that’s fact.
You know, you're allowed to concede whenever you want. So a lot of these negative feelings are on you.
If a matchup is so unfavorable, it might be healthier just to concede and move on with your life.
"Why, you never expected justice from a company, did you? They have neither a soul to lose nor a body to kick." -- Lady Saba Holland
This ^
Always expect the unexpectable!
Maybe in should have added in more detail that people like you also tribute to the decline. 🤔