You have not failed, you just learned something new, your experience is growing, even by typing here right now, that's the way you should look at it.
To be honest, from my look, you bought all premium tools thinking they will do the job for you, right? ( :
The fact that you don't know what GSC is telling your whole story, and that is ok, we have all been there.
You have to learn a lot, you missed a lot of "classes", and I'm telling you, it ain't that hard for open-minded people that want to learn, it's all on you, just use your brain, Google, and YouTube... (SEO).