Nobody wants to carry pieces of paper around with them, much less hand them out for them to be lost.
Since Covid19 rolled through, everybody is familiar with QR codes.
For roughly the price of a box of dead tree contact cards you can have a laser etched, hand finished acrylic card that directs people to the web address of your choice.
To keep things simple, the cards are black on a white background, including the QR code and a black and white logo or your name.
If you want two or more cards with different QR codes, I’ll put a suitable icon on the back so you can tell which is which.