I have completed civil engineering in 2017 and working as an interior designer for past 2 months. What can I do next? Shall I try abroad?

You have to give the top priority to jobs, PWD, Railways, CPWD and private sectors are the major recruiters. Further, you can pursue your UG studies like B.Tech/B.Des courses through the lateral entry mode. Further, if you have enough money and approaches then you can try abroad also.