I just found out Smash has combos

Was trying to figure out how to get Jigglypuff’s rest move to connect and came across combo vids with actual fighting game jump kick -> combo. Never knew that was a thing in smash. Thought the game was just footsie based with single hit moves.
I suck at jumping though so probably won’t be able to use them in a match. I can’t do that non-float jump without the new two jump buttons way but that means hitting a face button + trigger to just jump and it feels too weird. Wish you could assign short jump to just one button.
On the ledge thing Bork posted I don’t get how to grab the ledge without jumping off and trying to grab up onto it and the person moves off it by then? Also I don’t get when invincibility frames are when people are hit. Sometimes I can just run up and hit people on the ground off the platform but sometimes I can’t idk.
Still going through classic mode. Captain Falcon seemed really good with his quick down special slide kick that knocks people far.