There are many types of styles of reading ordinary decks of cards. The Romanians predict with 32 cards. The Russians predict with 42 cards. The French predict with 52 cards. The jokers were introduced in the 1920s in the Paddle Steamers of America. The Jokers were introduced as part of Poker called the wild card.
I read with the jokers as they mean complications, differences, lies, people who can’t be trusted, still waters that run deep etc.
As there are many styles there is many meanings of the cards. The 7 of hearts means success but to others it means something else.