I have personally made 2,500 usd in a real casino, the first 8 hundred or so with blackjack turned around and hit a 1700$ jackpot 10 min later, the most i lost was 400 in blackjack it was a 200 dollar bet, I caught an 11 doubled dow, caught an ace dealer had an 18 I had a 12,
You are still lucky, most gamblers who played long term are losers but it maybe depending on the games you played.
Blackjack is a good game but IMO it is categorized as luck based games, so that means in the long run we will still gonna lose.