There’s really good documentation out there and there’s bad/nonexistent documentation. So stackoverflow is going to be a more consistent experience.
Also I think it is a bit of a skill to be able to read documentation well, especially for Jr. Devs that might not have fully grasped OOP.
Getting started is always the hardest part. Once you’ve done some good work you can start relying more on word of mouth and charge more.
I would recommend doing some small jobs on Fiverr or Upwork. Contracting isn’t for everyone, nor is running a small business. Fiverr and Upwork will be pretty disconnected from your local contacts so if you mess up or decide it’s not for you then it’s easier to leave.
Ultimately it’s networking, instead of rolling your eyes when an acquaintance has an app idea you can offer to help.