Does the Windi work?

Pretty much since my daughter was born she has had bad gas. Screaming every evening, waking up from naps screaming, wanting to nurse and struggling the whole time, when I give her breast milk in a bottle her legs are like wood planks. She’ll be 11 weeks in a few days and it’s gotten a bit better but she’s still super gassy. My husband and I have tried Mylicon, Gripe Water, and I’ve changed my diet but nothing works for long. I’ve seen these in Target and have been skeptical, but the reviews seem promising. I’m wondering if anyone on here has tried and what your experience was?

Any other advice is welcome also. Thanks!