My first SaaS application and what I've learned

I've been working for 9 years full-time as a software developer. This started way earlier - for around 17 years now I'm learning how to write software, learning multiple languages and frameworks, getting a Bachelors Degree and working in multiple companies. But a dream of mine is writing software solutions by my own and being capable of living from it, so I can focus my time on working on my solutions, adding features and constantly make it better. My first SaaS idea, which is not an innovation to be honest, evolved from a problem I had: I was learning to develop using Flutter, and when you create a multilingual app, you use .arb files to manage your labels in different languages. This can become obstructive quickly. I had to update all .arb files before I could use it I could not see if a label is temporary or correctly translated I could not separate translation from development So I started to create a platform, which should decouple the programming and the translating process - I p