What's a good opening for a beginner (~1200 FIDE)

I guess the title says it all: What are the good openings for beginners?
please note that I've kinda heard all the talk about why beginners shouldn't focus on openings, BUT isn't good to know what to do and maybe have a slight advantage in the game?

I would be grateful for any details about this topic, I'll read all the comments. and I would be interested in any general advice for my current level.

Note: my games here are very old but now I stand at ~1150-1200 ELO

Well, this may sound weird, but I don't see you as a beginner from your game history. Also, because of that I wouldn't focus on openings. I think it is a good idea for beginners to choose a few openings and stick to them while learning fundamental development. In your case, I think you are past that. You are at the stage where you need to look at master games and instead of choosing one opening to focus on, you should experiment with many of them.

Go over your games when you finish and ask questions. Others will say you should do tactics puzzles, but if those are boring then you can achieve the same thing by going over your games to see positions you misevaluated, like the French game final position.

Stay away from bullet, and even blitz. Play longer games, think out the moves more.

I believe the Italian Game would be most appropriate for a beginner-novice, or any player for that matter.  It's an opening you can grow with and play for the rest of your chess career, including at the highest levels...

As a first book on the opening I recommend My First Opening Repertoire for White by Vincent Moret which features the Italian Game.  Also, his instruction for how to play the Grand Prix Attack as White against 1. e4 c5 (Sicilian Defense) is outstanding, the best I have seen.  Check out my review of the book here...

Good Chess Openings Books For Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-openings-books-for-beginners-and-beyond

Excerpts from Moret's White and Black opening repertoire books here...

My First Chess Opening Repertoire for White...

https://www.newinchess.com/media/wysiwyg/product_pdf/9033.pdf

My First Chess Opening Repertoire for Black...

https://www.newinchess.com/media/wysiwyg/product_pdf/9050.pdf

Chessable also has courses based on Moret's two opening repertoire books for White & Black....

https://www.chessable.com/chess-openings/s/moret

Here, a repertoire in the Italian Game for play at the highest levels, and a recommended follow-on to Moret's book...

Winning With The Slow But Venomous Italian by Muller & Souleidis...

This repertoire is focused on the 4.c3 /5.d4 variation of the Italian Game - The Giuoco Piano, which is also the main line of Moret's White repertoire book.

Read the authors' preface and introduction (book excerpt) here.....they also explain why they prefer it over the Ruy Lopez (Spanish Opening)...

https://www.google.com/books/edition/Winning_with_the_Slow_but_Venomous_Itali/HokfDgAAQBAJ?hl=en&gbpv=1&printsec=frontcover

https://www.youtube.com/watch?v=Szr8mNLKtPg

https://www.amazon.com/Winning-Venomous-Italian-Easy-Grasp/dp/9056916742

Finally, another very good introductory repertoire book on the Italian Game by John Emms - "Beating 1 e4 e5".   Emms' repertoire focuses on the modest 4.c3 / 5.d3 variation.

Collectively, the books above should teach an amateur player (and beyond) pretty much everything they need to know about the Italian Game.

Also potentially helpful...

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

For general advice, be sure to check out other articles relating to chess, including instructive chess resources and good chess book recommendations, in my Chess.com blog, including...

Good Chess Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-books-for-beginners-and-beyond

I have no affiliation or connection to New In Chess whatsoever.  I simply view these recommendations as being good and appropriate books for the OP's purposes.

 
I'm really curious to know how do you know that? because I can tell you, I didn't start playing and studying chess seriously until 2 months ago, anything before that was total rubbish tbh.

Italian

1.e4 and develop pieces. 
With Black choose only symetrical openings 1.e4 e5 or 1.d4 d5 and on other moves a pawn center e5 or d5 (1.c4 e5, 1.f4 d5 or 1.f4 e5) and just develop pieces.

Beginners have to pay attention to not loose a piece in one move before learning openings.
Don't waste your time to learn an opening, use your time to have better skill (work tactics, basic strategical principles and so on).

There is no need for you to focus on memorizing opening lines at this stage. Follow opening principles instead and just remember first 3-5 moves of some variation and that is it. Here is everything you need to know about openings at your level:

https://www.chess.com/blog/nklristic/surviving-the-opening-first-steps-to-chess-improvement

I also recommend the Italian game and Vincent's book for beginners. On the Italian game, it has simple logical moves that are easy to understand, it encourages early kingside development and castling, it is consistent with opening principles that emphasise piece development and few pawn moves in the opening, it leads to open games that help develop tactical ability, it introduces important themes such as f7/f2 weakness. On Vincent's book, it describes well the plans for the openings and reasons behind the moves, so even when you or your opponent go off book, you've got a good idea about what moves you should be looking at. The book is aimed at beginners though, there are only a few variations for each opening.

Chess has a lot of ego driven maniacs out there. Because they are 2000, they think everyone else is a "beginner". Then we get comments like "I only started 10 seconds ago".

Like you are wiping the slate clean. To me a beginner is someone who does not know where the pieces go. Your games had blunders and mistakes, but the moves had some thought put into them.

As mentioned before, I think you should look at master games, play games, ask questions about the games. Don't worry about your label, don't worry about when you started.

Nice distribution. Part three first, then two part ones.

Part three you have all their choices right away on the list on top;no need to see the many games they didn't like...

But if you want to look at hours of evaluation of all the crappy opening it's your choice!

The London System is a viable option with white for beginners. You get your pieces out, gets some control of the center and your king finds safety. With this setup you will survive the opening and have a decent position.

Ooops! sorry!:

How to get the ranking?

Many people here have given excellent material and I would love to give the additional advice to make sure you understand the ideas behind the moves when learning openings rather than memorizing lines. Learn whatever makes you enjoy the game more! I personally like the Italian, Scotch, and if you are 1200 fide, maybe try kings gambit! It could shed light on other areas of the game and help you become a better player! Good luck!

I'll echo TheMoistOstrich and suggest the King's Gambit. It forces you how to play for piece activity and initiative. It also leads to dynamic positions that provide a lot of scope to practice tactics.

Another bonus is you can always get a Kings Gambit if your opponent plays 1 ... e5. 

Thank you guys  : ))