Slot free play conversions and whether these are actually worthwhile.

so i keep getting these free play offers but honestly i’m skeptical they’re really worth chasing. it always feels like the cash conversion is pretty rough once you see how much you actually take home after running it through. yeah, it’s something for nothing technically, but after you grind through the playthrough, your actual cashout is way less than you expect. maybe the game selection matters? like, picking high rtp slots or volatility that matches your risk tolerance. i’ve tracked a few sessions and sometimes it’s just a quick mincash, sometimes i run it up a bit, but it always feels like i’m just barely treading water.

anyone here have a system for squeezing more value out of these, or is it just one of those things you take and expect almost nothing from?