I get it, but it’s really gonna be soup after you freeze and thaw it. Might develop a different flavor profile too. And if you keep it any real length of time, even frozen, you could be growing bacteria because they’re not dead just slowed down. Read up on safe techniques on the website. And try freezing one portion of your salad for a few days, (that’s at least as safe as leaving it in the fridge) then thaw it and see if it’s going to be worth the trouble.