I´m finally back with some news. Yes, I struggled a lot and bad problems with my motivation, but I kept working of course and did not give up. Here is my first App build with a JavaScript framework. I jumped on Vue.JS and so far I really like it. There is a ton of stuff to learn but it really starts to make more sense and the resistance to work on it gets smaller with each step of progress.
You can see the App and explanations here:
I 1,5 weeks there will be christmas holidays where I really want to improve me skills with Vue!