Possibly of interest: https://www.amazon.co.uk/Opening-Endgame-Cadogan-Chess-Books/dp/1857441249
What are some openings that reach endgames really quick?

Scandinavian Defense 1. e4 d5 always leads to open games. So is Queens Gambit Accepted 1. d4 d5 2. c4 dxc4

I consider myself something of an endgame lover, but trying to avoid the middlegame completely seems a little crazy
Instead of avoiding it, maybe you could learn more about it. That way you could enjoy "closed / complicated positions."
As for an opening that goes into endgames... umm... I dunno. Maybe exchange lines (exchange french, exchange slav, exchange caro, etc). But there isn't really a way to avoid the middlegame so...
Possibly of interest:
How Ulf Beats Black
"... Whenever possible he removes the queens from the board to enter instant endings, …"
https://www.newinchess.com/media/wysiwyg/product_pdf/9062a.pdf
Strategic Chess: Mastering the Closed Game
http://store.doverpublications.com/0486406172.html

Scandinavian Defense 1. e4 d5 always leads to open games. So is Queens Gambit Accepted 1. d4 d5 2. c4 dxc4
It does not lead to an early endgame. It avoids closed center or closed games.

As i keep feel uncomfortable in totally closed /complicated positions i prefer an opening which goes quickly into the endgames. I used to play Giuoco Piano (Nf3-Nxe4) but now as my rating is increasing my opponents keep getting tougher and they play some other opening or just play the better line for blacks or which are almost totally equal but which in turn goes into closed positions .
I am ready study even the most long openings but i hate closed position.
Please give me a opening or tell me a way to get my comfort back in closed positions
P.S - I keep missing tactics in closed positions so maybe that's why i am uncomfortable.
I looked at your last set of losses. You suffer from the same thing we ll do. Missing tactics, and hanging material. Of course we all fall victim to this at varying degrees. My advice to you is this.
Its not openings, thats your problem.
Its not closed positions, thats your problem.
What you should do:
Stick with Opening Principles until you can get out of the opening without blundering.
Study tactics with a real board, and pieces, while taking your time.
Opening Principles:
- Control the center squares – d4-e4-d5-e5
- Develop your minor pieces toward the center – piece activity is the key
- Castle
- Connect your rooks
Tactics...tactics...tactics...
The objective of development is about improving the value of your pieces by increasing the importance of their roles. Well-developed pieces have more fire-power than undeveloped pieces and they do more in helping you gain control.
Now we will look at 5 practical things you can do to help you achieve your development objective.
They are:
- Give priority to your least active pieces.
- Which piece needs to be developed (which piece is the least active)
- Where should it go (where can its role be maximized)
- Exchange your least active pieces for your opponent’s active pieces.
- Restrict the development of your opponent’s pieces.
- Neutralize your opponent’s best piece.
- Secure strong squares for your pieces.
Don’t help your opponent develop.
There are 2 common mistakes whereby you will simply be helping your opponent to develop:
- Making a weak threat that can easily be blocked
- Making an exchange that helps your opponent to develop a piece
Pre Move Checklist:
- Make sure all your pieces are safe.
- Look for forcing moves: Checks, captures, threats. You want to look at ALL forcing moves (even the bad ones) as this will force you look at, and see the entire board.
- If there are no forcing moves, you then want to remove any of your opponent’s pieces from your side of the board.
- If your opponent doesn’t have any of his pieces on your side of the board, then you want to improve the position of your least active piece.
- After each move by your opponent, ask yourself: "What is my opponent trying to do?"
"... for those that want to be as good as they can be, they'll have to work hard.
Play opponents who are better than you … . Learn basic endgames. Create a simple opening repertoire (understanding the moves are far more important than memorizing them). Study tactics. And pick up tons of patterns. That’s the drumbeat of success. ..." - IM Jeremy Silman (December 27, 2018)
https://www.chess.com/article/view/little-things-that-help-your-game


Openings can't really reach endgames quickly, but they can reach open positions, and this is important to know because endgames are open.
Therefore I would recommend an opening that breaks the center quickly such as:
1. Center game
2. Scotch game
3. King and queen gambit
4. Danish gambit
5. Ponziani opening
6. Scandinavian defense
7. Old benoni defense
8. Macleod attack
These are the most open openings in my opinion. There are more but these are my recommendations.
By the way, MY favourite is the ponziani. Really OP.
As i keep feel uncomfortable in totally closed /complicated positions i prefer an opening which goes quickly into the endgames. I used to play Giuoco Piano (Nf3-Nxe4) but now as my rating is increasing my opponents keep getting tougher and they play some other opening or just play the better line for blacks or which are almost totally equal but which in turn goes into closed positions
.
I am ready study even the most long openings but i hate closed position.
Please give me a opening or tell me a way to get my comfort back in closed positions
P.S - I keep missing tactics in closed positions so maybe that's why i am uncomfortable.