Like, God awful. I can hang with the best when I'm standing, but when the game goes to the ground, I'm usually SOL and get full mounted.

Hey, sometimes the ground just isn't where you wanna be.  For now, I'd practice on defending against people transitioning on you.  You can block most transitions by holding back on the right analog stick.  Make sure if you yourself are going for the transition, not to twirl the stick wildly.  Make short, concise half circles and you should get better results.  However, if your opponent is blocking your transitions, you could gas yourself if you go for too many in a row and they might submit you, so learn to strike that good balance of defending against your opponent's transitions and going for your own.
Also, I would suggest using the "wrestling in reverse" tactic if you prefer the stand up game.  Do this by using transitions and the ground game to get in a position to bring the fight back to standing.

I actually got better and went online yesterday, going 15-6, very respectable, if you ask me.

Hell yeah it is, especially if you're no quitter.
Right now, I'm at about 60 wins and around 40 losses.  I'm nowhere near the best, but I'm happy to have a winning record.

My overall record is now 16-11 so I'm not bad

"Like, God awful. I can hang with the best when I'm standing, but when the game goes to the ground, I'm usually SOL and get full mounted.

Any tips for the ground game, I know how to transfer from the bottom to the top with a BJJ fighter, and basic things, but I don't even know how to get into the full mount.

Yes, I've done the tutorial.

"

HAHAHAHA!  YOU SUCK YOU JACKASS!         j/k  You just have to practice and get better.

I'm a lot better now. My online record is a (legit) 32-19.

i havent even started playing online. It seems like i just have bad luck, or maybe after being trained by Fight Night that in most cases you can not worry about blocking and still get the KO i just need to calm down and block more. it seems like i'm getting flash-ko'd every other fight.