I post in many places on the site, not just fake spells. I'm only trying to help new members who don't know the difference between real magick and fantasy magic.
The people who are correcting misinformation aren't people who don't believe in magick, they're real witches who understand magick's limitations. You can absolutely work with the Fair Folk (as long as you've done your research, they're not easy to work with), cast spells, and make potions, but if you want any of that to work you have to be realistic in your expectations, and things such as shooting ice out of your hands isn't possible.
Looking at your profile I can see you just turned 13, so I'm not going to be harsh on you because you're still very young and it's completely normal for you to believe in things such as snow magick in middle school. Rest assured that no one is trying to convince you that magick isn't real, though, they are simply trying to help you understand what magick can do and prevent disappointment when certain things don't work.
I believe magic is real but I have yet to see any sort or form of proof that it is. There is absolutely nothing you can verify about it. No experiments or anything. Seems quite suspicious that the most visible forms of magic (trick spells) are mostly fake, and dismissed by other magic users.
In magic, the elements are not meant to be working with the physical elements themselves. They're meant to be symbolic of qualities of those elements, even when a physical representation of the element is included in a working. Ice magic isn't about making ice out of nothing, or trying to become what's her face from Frozen or anything like that. It's incorporating the emotional qualities of ice into the working to affect the desired intent -- such as turning off unwanted advances from someone, or to chill the heat of rage. It can also be used for something like slowing the progress of something which seems to be moving along more quickly than is desired.
You can use ice/snow in your spells to help them along, example use ice to put chills in a toxic relationship ( works well) or snow flakes in weather related practices.