Except that every one of those points is easy to explain and account for. The Democrat "vote surges", for example, is a curiously twisted way of saying, "more votes were counted and added to the total as they were processed". Ballots sent to the dead happens all the time, but sending a ballot doesn't equate to receiving it back, doesn't equate to counting it, and seems surprisingly ignorant of the possibility that people vote early, and then die. Even then, most of it turns out to be administrative errors that are easily corrected.
None of Trump's claims holds water remotely. It's only "credible" if you rely only on him as a source. Look deeper into this and you'll see that there is nothing at all to his complaints. He lost the election, by a lot.