- Pick one user downloaded app from your device.
- Check it has a libre software license text file, like GPL, to check we control it.
- If not, remove it (optional: replace it).
- Repeat the above for every other app.
This makes privacy easy, stopping apps blocking our privacy, by putting us in control.
You did not say which part of those guides is the issue, so here is the most simple and important part.
Are they asking for a guide that does not work, a fake guide? That would make it more simple.