Drawbacks of manual testing are :
* Highly susceptible to human error and are risky
* Test types like load testing and performance testing are not possible manually
* Regression tests are really time-consuming if they are done manually
* Scope of manual testing is very limited when compared to automation testing
* Not suitable in very large organizations and time-bounded projects
* The cost adds up, so, it’s more expensive to test manually in the long run
