I don't think that's a huge problem. I almost had no interest in anything my classmates talked about but in the morning before going to school, I would open few trending pages and check up news for about 10-15 minutes and drop small hints to start conversation and let them continue since I lacked depth. Discussions are pretty cyclical and repetitive in nature. It's easy to pretend that you care about something superficial because deep down, people are also aware of it.