Not necessarily. You may need new knowledge or qualifications, but some of your existing experience can still be relevant. The connection becomes clearer when you describe the activities you performed rather than relying only on your previous job title.
Make two lists for a possible new role: what you already bring and what you still need to establish. Include practical constraints such as time and cost. This creates a more accurate picture than either assuming everything transfers or dismissing your past. A transition can build on experience while acknowledging genuine learning needs.