The election system was designed assuming there are no bad actors.

In our court system, a complex trial will usually take years. They only had a month from vote certification to electoral college voting. That isn't enough time.

The courts just punted, tossing out Trump's lawsuits on procedural grounds rather than evaluating the evidence. Democrats were using this to say "See! The claims of fraud were wrong and frivolous!"

Some people tried to investigate the fraud after Jan 6, but they were blocked by Democrat voting officials at every turn.

Some of the fraud claims were obviously stupid. Some were interesting. At no time did both sides get together, impartially review the evidence, and give a refutation for why each of the fraud claims were wrong.

I saw one news article saying "Claims of election fraud are wrong!", and other citing that news article as proof there was no fraud. I never saw a detailed analysis of any of the fraud claims and an explanation of why they were wrong. It was just people getting hysterical whenever the issue came up.

Election fraud claims were banned from discussion on the mainstream media and even on social media. Most people would see that as evidence of a coverup, rather than "preventing the sharing of harmful misinformation". Election fraud claims wouldn't be misinformation if there was somewhere a detailed explanation of what happened and why it wasn't fraud.