Chromium you seem to be an expert on English teachers
I don't claim to be an expert, just posting from my experience here and for what applies to the majority of teachers. There are always going to be exceptions, and obvioulsy in your case, with a degree in Education, much of what I've posted doesn't apply to you. However, if the people posting here had a degree in Education, they wouldn't be asking for advice on what to do to teach in Poland.
I challenge you to find out what percentage of native English speakers in private schools in Poland have no qualifications to teach English. The percentage will be quite low. You make it sound like anyone who is a native speaker can get a job at a private school, which is simply not true. What I'm saying is not rubbish, and it applies to most of the people on this forum.