Big Bang theory is not valid.

[popeyespappy]

That's correct, "dark matter" and "dark energy" have not been proven to exist. I don't see the problem yet. Some promising data, but nothing set in stone.

Well actually I believe they do not exist at all

So you lack belief in dark matter despite the rather large body of evidence that it does indeed exist? Please explain the gravitational lensing effect.

We review progress in understanding dark matter by astrophysics, and particularly via the effect of gravitational lensing. Evidence from many different directions now all imply that five sixths of the material content of the universe is in this mysterious form, separate from and beyond the ordinary “baryonic” particles in the standard model of particle physics. Dark matter appears not to interact via the electromagnetic force, and therefore neither emits nor reflects light. However, it definitely does interact via gravity, and has played the most important role in shaping the Universe on large scales. The most successful technique with which to investigate it has so far been the effect of gravitational lensing. The curvature of space-time near any gravitating mass (including dark matter) deflects passing rays of light – observably shifting, distorting and magnifying the images of background galaxies. Measurements of such effects currently provide constraints on the mean density of dark matter, and its density relative to baryonic matter; the size and mass of individual dark matter particles; and its cross section under various fundamental forces.

Linky

it would be the equivalent of me saying I believe in fairy dust and then going to search for it.

Actually pretty funny coming from a deist.

This is my issue when you try to prove something you do so on evidence, what you do not do is have an idea then seek to find evidence which is not there to back your wrong idea ..... myself and a number of scientists believe this is exactly what is happening with the BB theory.

Big Bang theory was originally formulated to explain direct observations. These observations are evidence of the Big Bang. If the shoe fits, and The Big Bang model does fit the available evidence, you wear it until either new evidence that refutes the theory becomes available or find a new shoe that fits even better.