Yes, unfortunately, most of these sites (like survey sites) don’t accept members from Egypt. They usually only cater to a few western countries mainly because the companies they conduct market research studies on their behalf, operate in a few western countries and so naturally they want feedback from their customers and not people living in other countries where they don’t even operate.
You can pick writing jobs directly from a live job board or have to bid on a job and hope that the job is awarded to you by the relevant client, depending on how the site works. Some sites may require you to take an English grammar and writing test and some may require you to submit a sample or samples of your work while others may require you to take a grammar test to evaluate your skills. If you pass any relevant test, the relevant site will let you take on writing jobs.