What is the most traditionnal chess opening?

I play the najdorf and alekhine against e4.
I play the KID against d4.
I play the KIA and ruy lopez as white

I go for the Roy Lopez, but I working on the Wing gambit of the Sicilian and the caro-kann

If you want to improve perhaps you need to expose yourself to more varied pawn structures than what the KID can give you, it is pretty specialised! Especially if it's all you've played for four years with both colours.
While saying something like taking up the NID (as black) or playing 1.d4 as white would expose you to more varied chess perhaps you would find that too much work all at once.
So my advice to you would be to take up 1.e4 as white. You can still play a KIA against the French, Sicilian, Pirc, Caro-Kann and Alekhine. But you would also see 1.e4 e5 and its open games! Plus 1. e4 d5 Scandinavian, but that's not too much work.
Then as you get comfortable with your choices there you could look to replace your KIA against the semi-open games with something new in turn. As this happens you may see something you fancy for black to replace your 'winging it' Pirc.
As for recommending a book for 1.e4 e5 I'll decline to offer advice, as there are so many choices I think it'd be rude to railroad you in one direction. I will warn that an open game is quite different to playing a KIA by rote, you'll actually have to react to want your opponent is doing! Maybe this'll mean your results dip for a bit as you adjust, but as you get the hang of things I'm sure you'll start enjoying things!

Lots of interesting advice. Thanks to everybody.

BearyBear:
It is not rude to give some book recommendation when somebody asks. Just for the reason that there are many books on the market. It is very good and nice to let the people know what you like and what you dont. That is why people read and write reviews before and after they buy a product. Of course objectivity doesn't exist but that is fine if you are aware of that.

Yea, I know I copped out on giving a recommendation! Guess I haven't looked at 'early' books in a while and didn't feel qualifed to judge. But as I'm prodded...... :)
I'm sure the likes of Gambit and Everyman give good primers in the open games, something with 'starting out', or 'easy guide' in the title. On my bookshelf is John Waston's Mastering the Chess Openings Vol 1 (covering 1.e4) and Bronstiens 200 open games. Both books are a goldmine of ideas and plans. Not really a means to put together a Simple Rep, but rather to inspire. As for an actual rep (for the Ruy Lopez in this case) I just dug up a Chessbase article on 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4
Totally playable with plenty of traps for an unfamiliar Black to fall into, yet very concise. Reckon anyone could learn it in about two hours or so. It's not going to gift you a GM title but would be perfect for online Blitz/ Club level play. The article includes games of fairly high caliber of GMs on the White side. Let me know if you want more info on this one in particular.
A similar idea would be as the line above but with 5.Nc3. Again, light theory with resonable ideas to play for.
Finally, if you are not looking for an intro to the Ruy Lopez then i'd recommend something with an early d4 by White. It'll just expose you to so many more positions than your normal KI fare.
Hope this helps.

Wikipedia has a pretty good intro to chess openings. Free

en.wikipedia.org/wiki/Chess_opening

Contents
1 Aims of the opening
1.1 Common aims in opening play
1.2 Top-level objectives
2 Opening repertoires
3 Opening nomenclature
4 Classification of chess openings
4.1 Open games: 1.e4 e5
4.2 Semi-open games: 1.e4, Black plays other than 1...e5
4.3 Closed games: 1.d4 d5
4.4 Indian Defense Systems: 1.d4 Nf6
4.5 Other Black responses to 1.d4
4.6 Flank openings (including English, Réti, Bird's, and White fianchettos)
4.7 Unusual first moves for White

I looked over your games and I suppose your best bet is to start with tactics puzzles and play much slower time limit games. Probably 15-20 min with 3s delay/inc. Take more time and think about your moves and you will improve faster. If you want I would like to play a couple of 15 min games with you and go over them after the game. Unrated of course. Maybe another good spot to start is GM videos such as the ones from the chess club of St Louis or MatoJelic. I think they both have very instructional content for players of your skill level. Mato is very entertaining to watch and lets you solve positions in the most critical part of the game. The chess club videos go over the reasons behind moves and also the tactics. If you want to learn more "long term plans" over tactics watch the clubs videos if you want to learn tactics watch Mato's videos.

I have been hooked on watching both videos for months now and cover 2-5 videos a day at least.

One other video that is of extreme quality for players like you is the video about time. Not time on the clock but timing of moves. It is very overlooked and leads to better positional play.

www.youtube.com/watch?v=c3B34oKM0oI

The Spanish/Ruy Lopez is very traditional. It's very rich strategically, a lot of different pawn structures can arise. Various GMs said that here you can learn how to play chess.
I recommend "Mastering the Spanish" from Daniel King as your first book. He discusses all the different structures and ideas. This should be better for you than the modern books full of computer lines.