Hi!
I suggest that you should consider focusing on the topic of training and development. The reason is that you can benefit from your work in any sector, whether it be in any industry, institution, or company, as training is a universal field.
Secondly, training is the key area through which the productivity of any process can be enhanced, in addition to all the other HRM processes and OD interventions.
For any further sharing of knowledge, don't hesitate.
Best wishes,
Alok