Android 7.0+ with keeping the stock TouchWiz UI?

[dffdsdf sdsafsdfsa]

Is there a ROM or way that I can only upgrade the Android version, but keep the old TouchWiz and system apps?

I was trying to find S7/S8/S9 ROM ported to S5 but they were for klte while mine is lentislte, and I don't like the new Samsung's UI.