I literally cannot do anything properly except reading
This is not true. A quick review of some of your previous posts reveals that
You can use a computer
You can get online
You can upload an avatar picture
You have great visual aesthetic taste (I love the flowers and water in your avatar pic)
You write well
You think, reason, and comprehend well
You are polite
You are good at listening
You are good at showing empathy and compassion
You are good at encouraging others
You are good at advising others
You are good at consoling others
You are able to love deeply
So it's clear that you are able to do a lot of things really well. There are probably a lot of other things that you do well too, this list of things that you do well is just based on the limited information that I've gathered so far.
I see every reason why you should have very high self-esteem, not low.
It sounds to me like an abusive person who wanted to tear you down gave you some very negative messages about yourself, which you internalized.
Learning to understand, both in your head and your heart, that these negative messages were false, and countering them with positive truthful messages can be a path to raising your self-esteem.
Cognitive behavioral therapy might be a good thing for you to try. I think there are also some resources for learning about CBT techniques both online and in books.
You are actually a wonderful person Cagla, it's just that you don't realize it yet.