With more than 500 million blogs out of 1.7 billion websites in the world the blogging space isn't without competition. Bloggers account for a mind boggling 2 million blog posts daily.
When creating a blog you don’t need a revolutionary idea, however your blog should focus on something specific, focusing on your unique experiences and using your distinct voice and brand.
A good resource is Neil Patel who has many useful articles giving advice on how to create and market a blog https://neilpatel.com/how-to-start-a-blog/
With regards to creating trust there is no need to display your personal information.
The key thing is to create highly credible and engaging content referencing other sources and experts and vice versa. This is not just text content but also quotes, imagery, graphs, data, video, podcasts, etc.
Once you become a reference in your space, people will start talking about you and linking back you will know that you have started to achieved this.
It takes times to create quality and trustworthy content and it is best to invest in the time to do this rather than to create cheap quick content which will damage your trust.