Earlier quoted context omitted.
The only two times I have made bad navigation mistakes in mountains were in the weeks after I started using my phone and a mapping app - the realisation that using my phone was making me worse at navigation was quite a shock at the time.
But you didn't become worse at navigation. Sounds like you trusted a tool, and it failed you.
I'm now aware of that problem and haven't had that problem since but I was pretty shocked in retrospect that I confidently headed off in the wrong direction when the tool I was using was by any objective measure much better.
I agree with this:
"the key to navigating successfully is being able to read and understand a map and how it relates to your surroundings"
https://www.mountaineering.scot/safety-and-skills/essential-...