Why do you need an Agile Transformation at your company?
In order to understand whether you need it or not, start with answering the following questions:
Do you have an urgency of change at your organization?
Would you have the management support to realize it?
Could you dedicate resources for its implementation?
Are you striving to improve the following fields:
1. Increase team collaboration and communication
2. Increase project visibility
3. Work with changing priorities and dependencies
4. Increase scope delivery
5. Reduce project expenses
6. Customer satisfaction
If these pre-conditions match your reality and goals, then you definitely need to step on the Agile road.
Remember: do not try to do it on your own if you do not have the needed personnel and skills otherwise, you could end up with statements like "Agile is not working for us" which is not true.
Start with hiring Agile Coaches who could help you in the realization of this transformation and could prepare your teams to handle it on their own once they leave the company.