Your grandparents were young once too, with the same questions and worse Wi-Fi. Ask them what they learned.

Older people in your family are not a different species, they are people who already ran the experiment. They were sixteen and unsure about friends, work, and what they were supposed to become, and most of them have never once been asked about it. The details look different, but the questions repeat almost exactly. What really changed is the equipment.

Ask one specific thing rather than a general one. Try what they were scared of at your age, or what they wish they had quit sooner. Then let the answer run long, because the good part usually arrives after the polite part.