An innovative way to increase developer contribution to open-source projects?

Over the years, I've utilized a lot of Open Source projects, but I feel like I (and maybe a lot of people) leech a lot more than what I contribute.

I'm just thinking out loud. Is it just me? What's stopping people from contributing? How can we change that?

Is it the steep learning curve of understanding a new codebase? Is it impostor syndrome, thinking one could not do a better job than the core contributors? Or is it simply that sometimes merging a PR is a pain; due to a lack of standardization of the contributing process?

I would love to chat about this since I'm thinking about open-sourcing a NoCode platform I built, but I fear no one will even care. However, it does take time to clean up the project and make it more understandable for new contributors.