David,
By the way, your failed attempts for employment in the companies you mentioned, maybe due to the fact that you have no engineering degree nor do you have a minimum of 8 years of experience in the industry. These are general criteria used by those companies!

By the contents and tones of several posts you publish here in QL, you demonstrate arrogance, lack of humility and a poor understanding of the environment where you are trying to settle.
Please consider your attitude and the way you see the world and judge it. Try to remember that we have a tendency to judge in accordance with our luggage and our backgrounds. This is all OK when we are within “our world”, however when you are overseas, that is definite not sufficient.
You will learn a lot more, when struggling the way you seem to be now, which will help you be more tolerant and flexible in the future.
Be patient and kind, you will be rewarded in accordance with what you deserve!
Good luck and all the best!