Jesus Christ himself could tell you that fraud didn't occur and you still would insist on it. Trump's own lawyers, under oath, said there's no evidence of voting fraud, yet you still sperg on that there was all because your cult leader said so.
I thought you said the lawyers under oath said there's no widespread voter fraud, not that there is no voter fraud? There's a clear distinction between the two, and even if the lawyers said that (let's say that's hypothetically true) that doesn't mean it didn't happen.
Let's ask a simple question, is one case of voter fraud proof voter fraud exists? If yes, than almost anyone could attest that voter fraud does indeed exist, whether it's duplicate votes, double voting (as in moving from one state to vote in two different states), or even error-based fraud. Almost every election of every country I've ever seen has admitted to having some voter fraud, the distinction is that usually it's so small that it makes no difference to the real result. Heck even those Japanese Super Smash Bros. character polls had proof of voter fraud (alt accounts/repeat voting) from Sakurai.
From my own experience when voting this year, the pollsters didn't even ask for my id, or prove I was who I said I was when voting in my district. Most of the people in my district don't even know me which is heavily questionable in its own merits and against standard protocol. I could have easily had someone else claim to be me to vote under my name on the voter roll. Now imagine not knowing what protocols are being followed precisely and correct across the USA, and then tell me there are virtually 0 cases of voter fraud, and I'd argue you're being extremely naive.
It has nothing to do with believing or not believing Trump but understanding reality or that the system doesn't work as flawlessly as you'd think. Heck, I can't get the BBB and OSHA to preform their duties correctly and by the book, and you think any elections are running without shenanigans behinds the scenes?
Democrats often argue cops don't do their job correctly, businesses don't follow proper protocol, our legislators are corrupt, but somehow our voting system is squeaky clean? Something something X to doubt.