I want to sucide!

I (23 M) was working in a big firm in support role, campus placement, late DOJ after 8 months. Worked for 6 months , switch to another small firm for tech role. Thinking I knew coding and I can manage. Now I find it difficult, cant keep deadlines, not able to resolve errors , I don't know how I got hired now. I'm not able to face it and I want to die.