My claim is based upon the vastly greater probability of random events producing corruption rather than increase of useful information.
You're still ignoring natural selection, which is the most important part of the process, and the observed facts about actual mutations, most of which are neutral, some of which are harmful, and some of which are beneficial. Natural selection removes the harmful ones and amplifies the beneficial ones, so they spread through the population.
Nobody is suggesting that random variation
by itself will produce evolution. Random variation produces
novelty, it's natural selection that sifts out the useful from the useless or harmful.
You're basically putting forward (again) an argument from personal incredulity that goes against the solid evidence and mathematical modelling.