Hey.

At first I want to say to you is that choosing a career path is totally on you. You should go for your interest .

And now coming to your second question . We can't differentiate between mechatronics and robotics as robotics is subset of mechatronics . Both of them include mechanical, electrical, and computer science but mechatronics is a broader category . Mechatronics give you platform for Robotics but for getting good grasp of robotics you have to deep dive with your own way. If you want to work in the field of designing and developing autonomous machines then you can go for mechatronics.

Hope this answer will help you.

Have bright future ahead.