Evan Carmichael argues you find your passion by saying yes to new things and paying attention to how they feel. You'll be bad at first. The real signal is whether an activity energizes you enough to come back.
You need to wrap your heart around it. You have to feel it. You have to say yes and be willing to try at least once. If you don't know what you're great at, you have to say yes and try things, and you pay attention to the feeling. The most important thing is you pay attention to the feeling. How does it make you feel? You might not be great at it. I expect not to get results at the beginning of anything, especially if it's a new skill you're learning. Expect to suck at the beginning. You're gonna suck. It's okay. It's normal. But how does it make you feel? Does it energize you? Do you want to come back and do it again?