For today's life, there is no clue, and for the future, there is no way to start. The feeling of being at a loss makes me full of fear and panic about my future life. ...

You lack a fuse. Maybe many people have had such a blank day. Of course, including me, even today, I occasionally have the idea that if I leave this job that day, what else can I do, but as I get older, my mind becomes more and more stable. No matter what happens later. At least now you have to find a platform, a starting point to enrich yourself and settle down. Make your life stable. This is your biggest goal. As for what you should learn, no one can help you decide, even you can't choose. But you must firmly believe that you can learn from everything you do, and you can do your best in any position. Set a line and be a talented person. I hope this helps.