1.In general Staffing managers are incompetent , they will not provide you interview opportunities.
2. For a single client opening all bench resource with same skill is proposed, so only one get a chance for other they opportunity get cancelled automatically in system after 2/3 weeks.
3.Client expectation is high only if there is 100% JD match they consider you for the position. No learning (real time) because you get only projects based on existing skills. Even though there is lot of learning material but you cannot implement them as no one is going to hire if they don't see the same skill along with working experience in CV.
4. Highly insecure Job. If you have a stable job do not fall for WFH or high salary.