Except that our laws are not the same as Russia's.
Why is everyone still acting like our laws still matter? Let's not forget that Trump is blatantly in violation of federal nepotism laws by appointing his daughter and son in law to white house positions, and blatantly in violation of the constitution's emoluments clause by taking direct payments from foreign governments. I won't even get into the lesser laws he has violated, like for example all of the sexual assault cases, or the petty civil laws like the Trump University fraud case.
Anyone who says Trump can't run for a third term isn't paying attention. The defining feature of this administration is figuring out how to bypass existing laws. The ACA is law, but he's defunding it anyway. Amnesty for political refugees is law, but he's denying it anyway. Paying the contractors who built your casino is law, but he's renegged on them six different times. Trump doesn't care what some piece of paper says you're supposed to do, he only cares about what he can get away with in this moment, under these particular circumstances, to advance his own interests. He's spent his entire life skirting the law, constantly probing which laws don't really apply to him or can't be enforced, or figuring out who he has to buy off in order to avoid consequences for breaking the law and calculating the cost of the buying vs the cost of the consequences.
Most of the time, Trump is merely breaking "norms" instead of laws. Like appointing a pedophile to be a judge or an Alabama Senator isn't technically illegal because there is no statute against it, it's just a really bad idea that no one else would dare try. Like asking the director of the FBI to quash an investigation into a political ally guilty of collaborating with a hostile foreign power isn't exactly illegal, unless you put it in writing but doing it verbally is apparently fine. Trump walks this line constantly, always figuring out exactly how much we can get away with. Running for a third term is just as illegal as laundering money for the Russia mob or taking bribes from the Saudis, but just like in those cases who exactly is going to stop him? You? What are you going to do? The levers of power are beyond your control. Republicans control congress and they won't do shit.
To run for a third term, Trump would have to get on the ballot in the same states that he won last time, all of which already support him and most of which have republican governors. The rest of them could be arm-twisted, and blue states can be safely ignored. He could say the crazy liberals in Minnesota were subverting the will of the people by keeping him off the ballot, and then withhold all of the state's federal highway or education funds as punishment. This is how dictators operate, first through cajoling and then through punishments.
It's not exactly a sure thing by any means, but I also think it's dangerous to just say "well this could never happen in America, we have the Constitution" when we have a President who routinely breaks every law he can get away with and some that the can't. Don't count on Trump's tenure ending at 8 years just because every previous president's tenure has ended at 8 years. You have to get out and vote, make your voice heard, and stand up for our democracy. Otherwise, he's going to continue tearing down our country one brick at a time.