So no, it was not a massive landslide. One of your favorite phrases, "and everyone knows it" is total B.S.
77 million votes vs. 75 million votes is a win, but in no way a landslide, a mandate, or any of the other spins MAGA puts on it.
Now, if you'd like to take the word "landslide" literally... you know what happens when unstable dirt and mud starts at the top and careens downhill causing damage and destruction, that might be an accurate description of the Trump/Musk Presidency.