While Trump did say those words, it's unclear what he was communicating. He said the statement while criticizing Democrats and their approach to voter-identification laws. Critics framed it as evidence of an alleged plan to change constitutional provisions governing presidential terms. But the Trump campaign did not clarify what he meant by the "it" that would be "fixed," and it's also possible he misspoke.
Oh fuck off with the excuses that he might have misspoke. Him being serious is completely in line with his attempt at a coup in 2021. That is just putting lies on the same level as truth just because 'someone said it'.