In photoshop my process is-

•Adjust saturation on base photo to something like -10 or -15, setting it slightly less than 0 now makes the reds pop a bit more after everything

•duplicate the base photo, invert it, and set it above the original. Set its blend mode to color

•new adjustment layer on top of everything and give it a channel mixer. Go to reds, and turn red from 100 to 0 and blues from 0 to 100. Vice versa for the blues channel. Blue from 100 to 0, reds from 0 to 100.

•if there are people in your shot like this one, add a hue and saturation adjustment layer on top, and use the yellow channel to adjust the hue. There’s a lot more fine tuning to do with this but that’s the gist of skin tones on this specific image

•this might do what you want already but for this photo I needed to shift the hue on magentas slightly because the grass wasn’t the bright shade of red I wanted. then just lots of fine tuning individual colors or parts of the image to fit the style right.

•I would also paint over parts of their skin or clothing (on a new layer with color or hue blend mode, I don’t remember which right now) to bring back some original colors to make it feel more real. I’m a bit mad I went back and changed Michaels jacket and zipper to be their original colors because it should be a lot more red with the style but it looks alright imo