There are plenty of circumstances where someone can be guilty of a crime in fact, even if their intent is not proven. That doesn't make them innocent, it simply means any subsequent punishment for their guilt is reduced, to take account of the lack of (proof of) intent.
Even if Trump believed that dishonesty had taken place which resulted in him losing the election, if any measures he took, or advice he gave to others, to counter that were themselves unlawful, he is guilty of a crime regardless of whether he "intended" to break the law. Bear in mind also, this is an experienced businessman and former president, not some junior executive taking his first steps in the real world. He had plenty of political and legal advice available to him to check and double-check his options, and from a range of legal and political positions, if he chose to consult them. Instead, his default choice was shooting his mouth off on Twitter and the like, as usual.
However, I agree that with the current febrile atmosphere, political anger and accusations flying on both sides, and the way that the US judicial system is a public circus anyway during high profile cases (think OJ Simpson, Michael Jackson, Louise Woodward and goodness knows how many other cases), then it's hard to see how this mess will be settled once and for all by these lawsuits.
I highly doubt that there is much that will happen to Trump ultimately. Frankly, even if it's a matter of damage to his 'reputation', he's so bullish that that will not matter to him, and with the combination of his wealth, his formidable support base and the protection he has from being an ex-President (and possibly soon to be back in the White House again), nothing serious will happen to him in terms of conviction and/or jail time.
All of this will just turn into lots of media madness and political in-fighting, the biggest outcome of which will probably be to severely damage trust in the US political system, and maybe even cause public unrest in places, but I doubt it will touch the man himself.