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In this paper, we investigate an extension of the standard $\Lambda$CDM modelby allowing: a temporal evolution in the equation of state (EoS) of DM viaChevallier-Polarski-Linder parametrization, and the constant non-null soundspeed. We also consider the properties of neutrinos, such as the effectiveneutrino mass and the effective number of neutrino species as free parameters.We derive the constraints on this scenario by using the data from thePlanck-2018 cosmic microwave background (CMB), baryonic acoustic oscillation(BAO) measurements, Pantheon+ compilation of Type Ia supernovae (SNe Ia), andsome large scale structure (LSS) information from the cosmic shear surveys:Kilo Degree Survey (KiDS)-1000 and Dark Energy Survey (DES). We findconstraints on the EoS and sound speed of DM very close to the null value inall the analyses, and thus no significant evidence is found beyond the standardCDM paradigm. In all the analyses, we find the significantly tight upper boundson the sum of neutrino masses, and significantly lower mean values of $S_8$,which are in agreement with the LSS measurements. Thus, the well-known $S_8$tension is reconciled in the considered model.

Observational Constraints on generalized dark matter properties in the presence of neutrinos with the final Planck release