the scotch gambit! not too much theory but always a good game for white ;)
openings

what about 7... Nxf2 8. Kxf2 Bc5 black gives up a knight for a pawn but forces white's king out on the board. This could be dangerous for a beginner. White has to play accurately to keep up the material advantage, otherwise white might not only lose the advantage but even lose material and suffer from a bad position at the same time. However, quite few players would play this move as black because of the material loss.

Instead of the Scotch Gambit, beginning players might prefer the Scotch Game, where you're not forced to find ways to get your pawn back later on...

Well, sure. Most of the 1. e4 e5 2. Nf3 Nc6 openings are good starting points. The Ruy might be pushing it a bit, though...
I did play the italian game but It got to a point where it just got boring
I was looking for a d4 opening or system

I did play the italian game but It got to a point where it just got boring
I was looking for a d4 opening or system
If you want to try a d4 system, you might look into the English instead. It has the charecter of a d4 game (slower, more positional) but less theory than d4, as you don't have to wade as deep into the Queen's Gambit lines and KID lines (the english can transpose into positions of each, but you can somewhat avoid it).

If you play d4, there are a pretty large number of black defenses to be aware of, but (at least from my experience) they aren't as immediately tactical as many of the e4 openings, so you should be able to walk your way through the opening by playing 'natural' moves without great difficulty.
Of course, if you are looking for a system, there are some decent options with d4: The Colle-Koltanowski, the Colle-Zukertort, or the London. I don't prefer these systems to the main lines of the QGD, Slav, Semi-Slav, QID, or KID, but they are playable.

I did play the italian game but It got to a point where it just got boring
Did you try the 1.e4 e5 2.Nb3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 variation? It is anything but boring...
After 5...exd4 6.cxd4 Bb4+ we have the comparatively safer 7.Bd2 (7...Bxd2 8.Nxd2)(7...Nxe4 8.Bxb4Nxb4 9.Bxf7+ Kf7 10.Qb3+) or the highly complicated wild Moller Attack with 7.Nc3...
They are anything but boring, but requires some knowledge of the lines before trying them OTB...
Also you must have knowledge of the Two Knight's Defence...

I also recommend the Italian game. If you'd rather go 1.d4 I suggest the richter-veresov (1.d4 Nf6 2.Nc3 d5 3.Bg5) which is more tactical than a typical queen pawn game. Of course there is nothing wrong with the queen's gambit, both colle systems, torre, etc. if you want to try those, but they might not serve you best if you are a beginner.
Also, spend more time playing and less time studying when deciding which opening you like better.
btw, the main line in the fried liver is 5 ...Na5 not 5 ...Nxd5

I did play the italian game but It got to a point where it just got boring
I was looking for a d4 opening or system
If you want to try a d4 system, you might look into the English instead. It has the charecter of a d4 game (slower, more positional) but less theory than d4, as you don't have to wade as deep into the Queen's Gambit lines and KID lines (the english can transpose into positions of each, but you can somewhat avoid it).
I like positional play and I hate the english in fact for both sides. I find it boring even though I'm a 1 d4 player. d4 has alot of theory but not as much as e4 and the thing is you don't need to learn the theory as much as sharp e4 openings. The queen's gambit, for example, has lots of theory since it's the most respected d4 opening but you can get away with just knowing the ideas most of the time. Although some lines of the semi slav call for memoriztion. I have tried KID ideas against the english, but of course they probably won't want to transpose if they're big english players, and it usually ends up as a botvinnik setup. I usually don't find any chess positions or openings as boring, but this one I do. It's extremely boring at least for black. For our level, I think you're overestimating how much theory is needed to play d4 well.
My point: 1 c4 is definitley not for everyone.

Just play an opening you are comfortable with. There is an opening explorer on this site so you could always check it out?
Does anyone have some good openings for a beginner I would like something like system maybe the london I don't mind spending loads of time studying but my rating is only 1300