Hi Ouissal! EFA is a requirement for CB-SEM not PLS-SEM. There is no need to apply other statistical methods before performing a PLS-SEM analysis. But, I recommend you to check if their is missing data. Also check the descriptive statistics, especially the minimum and maximum observed of the indicators' scale, as well as the kurtosis and skewness. See Hair, J. F., Hult, G. T. M., Ringle, C. M., & Sarstedt, M. (2022). A Primer on Partial Least Squares Structural Equation Modeling (PLS-SEM), 3rd edition, Thousand Oaks, CA: Sage.