Check our #introduction #grownostr #asknostr or a hashtag related to your interests. Like the others said, interact and add value to someone's experience here and you will build a community of people wanting to return value to you. Maybe it isn't necessarily about the size of the community but the quality of the community.
What do you use to broadcast your podcast currently? If you can set a custom rtmp you can get set up on zap.stream pretty quick.