sorry if it's wrong to ask here, I've never joined an OSS project but kinda want to are there many out there that could use the help?
This is a repo of good beginner OSS projects to contribute to
Good to note: contributing to code projects also occurs in closed source, big orgs. The same tools are used. My cases for example are from government and our projects usually aren't open source.
Most projects have some contributing.md file or something similar with their specific guidelines. One should really start from there.
Also a fire and forget merge request is probably the least welcome way to contribute to something.