I read about this hobby project yesterday and thought it was very inspiring. This guy wrote a scraper that compares the prices of groceries and it made a big political splash too. https://mastodon.gamedev.place/@badlogic/111071396799790275
Personally, I also wanted to try some new tech, and created my first android app for my daughter to practice her basic math operations many years ago.
Another option for you would be to find a FOSS project you like and contribute there (fediverse? Hint, hint).
Been working in IT since 1997. Imposter syndrome sucks.
That being said, contributing to FOSS can be as little as helping others in a Linux forum, validating bug reports, etc before you file your first pull request 😁