If you can learn now, take the civil service exam. The age limit is also local, and there is water, but we still have to try!
I don't know what your advantage is. Everyone belongs to his own strengths. You can do it yourself if you can. Be your own boss and find good business opportunities. Opportunities are everywhere, just look at how you use them!
Looking at your situation, I feel that you have fallen to the bottom now and have no confidence. No matter what you do, the first thing to do is to rebuild your self-confidence. Don't think that you are shorter than people when you are older. Although you are on the same starting line as those little brothers and sisters, you are far ahead of them. You have more experience than them, you know more people than them, and you are more open to things than them, so I think the most important thing for you now is to regain your confidence. With self-confidence, half the battle is won. Plus there is a flaming mountain, which can't be crossed by hard work. God is fair to everyone. If you lose on the one hand, you will be paid back twice. So, you should cheer up and sum up your experience in failure, instead of crying in failure. No one will see your pain. You should leave your pain to yourself and your strong optimism and tenacity to others.
My experience is similar to yours. Hehe, you can vent when you are helpless. My way of venting is to find a book to regain my confidence, listen to light music and practice yoga to calm my mind.
Well, I don't know if these words are useful to you. I hope you can find yourself again! Start (a disease)