Hello Kavya.

• The number one step has to be completing a bachelor’s degree in CSE / IT. Though this isn't necessary. You can learn coding and mobile app development at home from Youtube too. You can be of any egineering branch and still be a Mobile App Develeoper.
• Second, you need to decide, whether you want to do Android or IOS app development. Though, you can obviously do both. Or, you could use cross- platform softwares like Flutter by Google to build an App on both Android or IOS at one time.
• Last but not the least, you need to develop your own app. In the end, all that matters is that your experience and initiative can put you ahead of your competition when you are interviewing for jobs. You can develop many small projects or one big one, but you need to work on projects for improvement in your skills.

The national average salary for a Applications Developer is Rs 5,40,367 per year in India. This salary can be far higher if you are working in Metro cities and if you have high work experience and skill. The stress in Tech jobs is usually higher than non-tech jobs, but if you love what you are doing, then everything will be manageable.

All the best!