I regret not taking computer science, I did BSc that too in environmental science

My graduation is from tier 3 college. I regret not taking computer science. Did BSc in environmental science then I was not able to get job because I didn't knew where to apply. I am so dumb. Then thought working in hospital/ clinical lab would be some research experience. My bad, even the 10th failed works in pathology lab. One doctor offered me salary of 6k/month. One environmental HR offered salary of 12k/month with 3 year bond, internship of 3k/month. I don't know what to do. I am thinking to study, may be in Germany, there I hope I would find some good opportunities after masters.

I regret not doing CS/ IT. I feel so bad I am 23. Life feels end. I have bought linkedin premium, I hope I will learn some good from there and get a well paying job. But the self confidence is in negative.