Gp crates rant

I am wondering why is the win rate of gp crates which contain no coupons so low? I don't see a point in wasting millions of gp for sub par guns which are mostly trash in current vip/steyr/ebr whatever meta. Yes you might say if you dont like it dont spin. But what else i am supossed to do with gp? I am broke with gp again for I dont know which time already since steyr elite was released.
Give us proper win rates please.
Here are some of my examples: sg540 4.5m gp, bolt shotgun 6m gp (no win yet) also 500 crates on the new mg no win.
Edit: I've won like 5 thompsons and 6 winchesters with 1m gp. So you can compare it for yourself.

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