There is always something in common. They like sportsball because Mr. Strongguy heroically supports his team. You like btc because it heroically supports humanity.

Try the ford conversation method:

The FORD method is a conversation technique that uses four topics to guide small talk and build rapport. The acronym FORD stands for Family, Occupation, Recreation, and Dreams. By asking open-ended questions related to these areas, individuals can initiate conversations, discover common interests, and foster deeper connections.