I guess I cannot estimate how things are where you live since it is an entirely different culture. But I donāt think that you need to be the best of the best to get somewhere. It took be a few wrong turns after school to find out what I want to do professionally.
School was no fun anymore, the kids there are annoying, had my first apprenticeship as an electrician.
Global bank crisis happened, my company could not give me a job as what I learned, but since I was entitled to keep working there due a generous contract, I became an operator, controlling machines in shifts. Very bland stuff. On top of it I knew I could also not work as an electrician because I learned of myself I have no talent for practical work.
So what did I do? I was still living at my mother, had no expensive hobby and kept on putting what I earned to my savings. I lived from these savings for a year without a job but doing other things that were important for me: I did a fresh restart by leaving my home, joined a living community with a friend I knew online, 350km away from home, registered to do my Abitur in a school for people who already worked (āsecond change educationā) for the next Winter. And I did relax.
I did not put me under pressure, I was good in scientific classes, bad in language classes, picked my fields of examination and did a good graduation. In the meantime I settled on what to do after it: I wanted to become a programmer. I knew what my talents are, so I naturally was qualified for what I was looking for. Getting there turned out to be a bit rocky: I wanted to study that but the overlap of my finals and the university messed up my entry. Not willing to spend an extra year there, I did a second apprenticeship. I did not want to sit in school/university all my life, just like it was when leaving school the first time. It was kinda lousy where I got to, graduated on an okay level, found a job after it. It was okay too, learned a few modern technologies.
I decided to leave the company a few weeks ago. Registered on LinkedIn, contacted a few dozen companies and now I was offered a well paid job with very dynamic teams and many different fields I get to work at. I canāt wait what to learn next, both about my profession and about me. I will start there at the 16th this month. 
I am also lacking somewhat in terms of my real life contacts, but that is what I work on too and I begin to learn some very nice people around me, even with romantic potential.
I am not telling this to make you envy, but because I can share some experiences. I had no parents that put pressure on me, my mother always was part of the working class and besides my aunt I am like the first of my family with Abitur. I was kinda forced to find my own path, and even when your parents try to do that for you, it is you who knows who you are, what your talents are or at least what you donāt want to do.
It is also no weakness to do detours to find your place.
What you did was such a detour. I am glad skill issues were in your way at this, but there are positive takeaways I can read in your post. You reflected on yourself, realized many around you push you into a wrong direction or measuring you on on someoneās else ideals. You are about to learn where you want to go to in life. That is great! And if you get the hang of that, you become better at this, with less detours.
Good luck getting this current step behind you and finding out what the next one will be. 
I reached nothing. And btw, I didnāt explicitly specify teaching, not sure why you put the stress on it :DDD Iām the last person you might want to learn anything from.
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