DM fractions for our SFGs. Left: DM fractions within the half-light radius R_e, f_DM(< R_e), as a function of halo mass, M_vir. The dashed line represent the downward trend of Genzel et al. (2020). Right: DM fractions within R_e as a function of stellar mass surface density Σ_⋆, 1/2 within R_e. In both panels, the error bars from our data are 95% confidence intervals, and the open circles show the sample of Genzel et al. (2020). The shaded (blue contours) histogram shows the location of SFGs in the TNG100 simulations for z = 1 central SFGs, while the gray contours show the satellites. The dotted line represents the toy model derived from the TF relation (Eq. (9)).