Are you more interested in making money or do you want to develop your writing skills to publish quality books? These two areas are different, and depending on them, the niches are also different.
Are you more interested in making money or do you want to develop your writing skills to publish quality books? These two areas are different, and depending on them, the niches are also different. If for money - then write about everything related to cryptocurrency, blockchain. If you want to go the second way, you can train your skills on such resources https://www.reddit.com/r/collegehub/comments/wfcbn9/best_essay_writing_service_reddit_20222024/, I used to take extra income that way. E.g. start a blog about training and survival. The niche of preparing is absolutely always relevant because people in some states always have to be ready for a hurricane, a flood or an earthquake.
I think you need to select a niche of which you have a great understanding & You are passionate about it. If you feel like I am good at the particular niche and I can write about this topic, then it is the best niche for you.