Really good tip Jeremy Tan!!! Not to play cards with people you don’t know!!! Also, placing the cards ON THE TABLE and take one card from the top by pushing them outward!!!!
Years ago i saw a dealer at a black jack table do this from a shoe. We called the pit boss over and went over the statistics of how the dealer was winning in an suspiciously high manner. They quicker sent her " on break" and i never saw her again.
I wouldn't play cards with anyone that shuffles the cards like you do. That's the shuffle of someone that has has cards in his hands for years. What else can he do ? I would ask ...