Theoretically, you will play a suit contract 4 times more often than NT contract. Playing a suit contract is a little bit more complicated as the highest card in a suit will not always win if a trump suit is being played. “Trumping” or “Ruffing” become part of the play.
Now the bidding is over and you have your bridge contract to play. Your LHO (left hand opponent) has select the card for opening lead and put it face down in the table. Your partner lay the card on the table as dummy and it is time for declarer play.
Once everybody has 13 cards on their hand, then the first battle is to win a contract. Just like the real world contract, to achieve the highest contract we will need to do an auction. And may the highest bidder win.
The contract is simple: the partnership whoever win a contract promise to win certain trick with certain suit as their trump card – or they can choose to use without any trump card.
The other partnership/the opponent will try to defeat the contract by winning as much trick as they can so that the other partnership cannot deliver their contract.