Joe1w ago
Ask the fan in your life what is going on. It’s ok if the answers are incomprehensible to start with.
Ask clarifying questions, and in the beginning be ok with limited understanding. Look at the trend in your understanding, not the level.
A cool friend will be happy to tell you the details curling or cricket or the NBA draft or whatever, you have effectively met them halfway even if you don’t end up deeply interested.
This approach also works for perfume enthusiasts, fountain pens, computers,...