I am 100% certain that Trump did not believe he was entitled nor did he want votes he didn't win. But he didn't want to be defeated via fraudulent votes. And he believed then and still believes there were enough fraudulent votes added to the mix after 2 a.m. the day after the election to make a difference. Right or wrong it is not illegal to believe that.The problem is that Trump believe he was entitled to votes he did not win.
The states counted the votes, recounted the votes and even audited the votes, and time after time concluded that Trump lost, and was not entitled, no matter what Trump "THOUGHT" he deserved. He did not get their electoral votes.