Light curves and RV data of TOI 3837. We show the best juliet joint-fit model in black. FEROS RVs are shown in blue and HARPS RVs are shown in red. The top panel shows the TESS light curves, the bottom left panel shows the RV time series, and the bottom right panel shows the RV phase-folded data. The black line in the O-C of the RV time series is centered around zero to compare with the RV residuals after the best-fit model substraction.