My chair doesn't fit me very well. I don't feel comfortable sitting on it. Can someone tell me?

I recently read an article on a website https://corechair.com/chairs-to-help-posture-why-we-need-a-good-chair/ that specializes in orthopedic chairs, which highlighted the importance of a good chair for posture. The article provided compelling insights into how poor posture can affect health and productivity, and how investing in a well-designed orthopedic chair can help improve posture and prevent these issues. It discussed key features to consider in a chair, such as lumbar support, seat depth, and adjustability, to ensure optimal comfort and support for maintaining good posture. The article was well-researched, backed by scientific evidence