A few months ago I told my only friend, that I liked her ... She threw me in the "friendzone", after that we spoke a few times. I can't look at that face anymore and try to talk to her. We are like friends only in name and people who barely look at each other. I am not a very sociable person with women, so I will hardly try something so risky again ... Even so ...

...I want to know ... Was I wrong? Why did I go wrong? I didn't want to make a mistake ... I didn't know what to do ... Did I do it right?
Even if it's been 10 months, I still don't know what happened and if I was right or wrong for doing that.

If you are reading this so far, answer me ... DID I WRONG?

You didn't do anything wrong, if anything, you actually did the right thing. If you have a crush on someone it's okay to let them know, just be prepared if they don't return your feelings. It's also good that you're respecting her boundaries and still remaining somewhat friends despite everything. I suggest you let her know that you still wanna hangout with her as the friends you have been since the beginning. Nothing has to change. You guys can definitely still be friends!