"good-first-issue" are not used by enough projects to find them blindly. Most maintainer welcome contributions, but don't advertise for it. As already said, try to improve the tools you already use. Whatever small the change is.
My first time was with a pixel art web app named Piskel. I add a listener to the escape key to close a popover.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.