Computers do play a little differently. Great strides have been made in trying to make them play more like humans, but it's still not the same. At lower levels especially they tend to just give away pieces to balance their expert play. Luckily there are plenty of humans who are ready to play you....
https://support.chess.com/article/558-how-do-i-start-a-new-live-chess-game
How do you play against another player without having to join a tournament?