Personal Finance App - Full-Stack Web App

What are you most proud of, and what would you do differently next time?

What initially began as front-end project - I decided to challenge myself and learn full-stack development by building this into a full stack project

What challenges did you encounter, and how did you overcome them?

Everything from making API calls to the backend, to setting up database, ensuring auth works. Deployment was especially difficult especially when it came to security and networking.

What specific areas of your project would you like help with?

See if theres any unnecessary code - or whether I could make things more efficient. Also I will appreciate if any security issues are pointed out.