Efficient processes get the most out of your resources. They use less material and require less time and manpower to achieve the same results as less efficient processes.
When you make your processes and management more efficient, you gain an important advantage over the competition. If you don't, the competition may use the time to gain an advantage over you.
You don't have to aim for radical reengineering (according to Hammer & Champy) right away - it can be enough to identify the critical processes and implement improvements and further developments there. My advice is: start with the processes in which your customers are involved and improve customer perception (using blueprinting). This will help you to see more clearly which processes in the background need to be adapted.
The processes you have selected are first analyzed primarily in terms of material and information flow and examined for potential improvements. Your employees are the key here - only they really know the differences between planned and actual processes.They must support all changes, because processes are what is in people's heads - not what is in the manual.