Well kiddo, Donald Trump is like the captain of a team called the Republicans and he was running for president again in 2020. When he lost, he said that there was cheating and fraud happening during the election. Some of his teammates, the other Republicans, don't agree with him and they think the election was fair and honest.
They might even be upset with him because they don't want people to think that cheating happens in their team's games. But some Republicans do agree with Trump and they think something fishy might have gone on during the election. It's like a big argument on the playground with some kids saying one thing and other kids saying something else.