#Simic Deck

I just spent hours tweaking my Simic merfolk deck and I'm getting destroyed by people saying it's overpowered. Like, I get it, the combos can be strong, but so are a lot of other decks out there. It feels like every time I try to play something a little different, I get roasted for it. Is it really that bad to try and make a Simic deck work? I mean, the card advantage is real, but I don't see why it's getting so much flak. Did I miss something?...