@danialbehzadi that would be great! Here are two examples of how people did that:
* https://f-droid.org/2022/04/25/from-user-to-contributor-and-beyond.html
* https://cketti.de/2021/01/14/my-first-year-as-a-full-time-open-source-developer/
Sadly, in Europe/US, I think most people believe they can't donate to someone in Iran because of sanctions. It would help if you explained the details of that. I don't know the answer. One thing to check would be if you are eligable for NLnet grants. They don't fund work on Debian directly, but they do fund work bootstrapping key tools like Android SDK or Gradle