Is it possible to have a normal delivery after one has had CS previously?

It is possible after one scar on the uterus. The risk usually is rapture of the uterus. This is usually referred to as VBAC (Vaginal Delivery after C-Section) and you can read more about it on this link https://www.motherhood101.co.ke/knowledge-base/labour-birth-after/about-delivery/vaginal-birth-after-c-section-vbac/