How can I work as QA engineers?

Hi,

If you are a software Engineer or you pursued similar degrees like Bachelors in Information technology or computer science then consider it as a bonus and you are good to go but if you are not then don't worry you can take a course on software testing and INSHA ALLAH it should be helpful but in case you don't find anything such around you or if you don't want to spend money then there are many free series of lectures available on youtube and you can choose one as per your convenience. You can also look for the courses online and crack the online certification(they will charge some amount for it.). Yes you can learn Selenium and Manual testing as sister @Aziza mentioned earlier. Selenium is an open source tool so don't worry you will find ample of tutorials online INSHAALLAH. 

learn selenium  and manual testing