Last year I received a LinkedIn message from a recruiter. After the first online call, I was invited into the office, where her manager was also sitting at the table. After a few minutes I realized that everything she had promised me in the first meeting had been denied by her manager. I just said what I don't see myself doing in this position, which she didn't understand because I met all the requirements.
My main confidence boost was a senior developer that answered every question even if it was the most stupid one that you could imagine. He would sit down and explaine it to you like you were three years old. Sometimes he at first would say to look for solution by yourselfe or just give you a hint that was enoughe to figure it out by yourselfe.
At the first company that I worked for I quit after a week because everyone took a task and worked for themselfe. None developer had time to explaine something to you and no documentation.