In the context of the double folding optical model, the elastic and inelastic scattering of ⁹Be + ¹²⁰Sn at E_lab (⁹Be) = 31, 42 and 50 MeV and ^9,10,11Be + ⁶⁴Zn elastic scattering at E_c.m. = 24.5 MeV are investigated. Real folded potentials are generated using the DDM3Y interaction based on the suggested density distributions for the ^9,10,11Be nuclei. The imaginary potential is taken in the traditional standard Woods–Saxon form. Coupled channel (CC) calculations using a rotational model are performed for ⁹Be inelastically scattered from ¹²⁰Sn, leading to different ¹²⁰Sn excited states. Successful reproduction of the observed angular distributions of the elastic and inelastic scattering differential cross-sections has been achieved using the derived potentials. Special attention is paid to the previously suggested (3−131−, E_x = 2.40 MeV) ¹²⁰Sn excited state in order to present the contributions come from - 3−131− at 2.40030(5) MeV, 2+323+ at 2.42090(3) MeV, 2+222+ at 2.355383(24) MeV, and 4+141+ at 2.465632(23) MeV—in forming the inelastic data observed at E_x = 2.41 MeV.