This particular phrase, that you repeated several times, There is not a single thing you can share that can prove with complete certainty, is indeed a logical fallacy. It has nothing to do with the merits of either side of the argument. We could be talking about the existence of bigfoot using this same argument that you brought forth.
There is not a single thing you can share that can prove with complete certainty that Bigfoot doesn't exist.
There is not a single thing you can share that can prove with complete certainty that Bigfoot does exist.
Both of the above statements are true, which is why it is a logical fallacy. It is called the appeal to ignorance logical fallacy. You used is several times to defend your position. I have no problems with you believing Sims injury had nothing to do with last night. I do have issues with flawed debate tactics, which is what I was pointing out.