Probability density distributions of the VT correction factor f_VT ≡ M_True/M_Dyn (where M_Dyn ≡ σ_v²r_G/G), calibrated using the TNG50 simulation. The curves correspond to three dynamical models: radial (using uncorrected velocity projection), minor infall, and major infall. The peaks reflect the optimal correction factors derived from simulation ensembles, with widths indicating uncertainties in velocity anisotropy modeling.