cosmomanic

I am a rookie when it comes to dark matter and I might be wrong but just hep me clarify something. We know that dark matter is everywhere and accounts for almost 20x of the visible matter and we cannot see it but we can see its effects. One of its effects is bending of light, which is like watching through the bottom of a wine glass and if it is everywhere then why do we not see others the same way, like we were seeing them through the wine glass???