No, you dont have to be interested in bitcoin. There's a lot of lists of accounts out there that focus on other stuff.

Try out different hashtags based on your interests

This is just an example:
nostr:nevent1qqsrsqx3j39dds3x7p0r2533q28yr7dw0ukw79wp89l3sqedsa2ykssppemhxue69uhkummn9ekx7mp0qgsre75pdw6gjtaxh6vn43e2nlxmkzymm6svtkgprlfqf52523069kgrqsqqqqqp3m98pg