when i play chess, after the opening ends got no idea what am doing next

Some strategic questions to help assessing positions and finding what their needs are :

- Who is better ? Are you playing for neutralization, complications, conversion, tricks ?
- What's your weaknesses and problems to solve ? Can you solve them easily ? What's your opponent's weaknesses and problems ? Can you generate new ones with simple moves ?
- Is the opponent's king vulnerable to an attack ? Is the king's defense weak, are your pieces coordinated for an attack ?
- Are your pieces active enough ? Do you lack in development, do you have a dead bishop, a rim knight, some passive rook and can you improve them ? Is any change in the pawn structure helping your pieces or your opponent's pieces the most ?
- Which pieces do you want to trade or keep ? How good is the endgame and do you want queens in or out ? How are the rooks endings ? How good is the middlegame ? For which square color control are you fighting for ? What's your strongest and worse pieces and what's your opponent's strongest and worse pieces ?
- Do you play for static or dynamic ? Have you any static advantage (better structure, more material, bishops) ? Have you any dynamic advantage (better piece activity and coordination, strong pawn breaks and line opening moves, initiative) ? are you in a position where you need to gamble or do you want to stabilize ?

There is more, chess strategy is a mess fore everybody.

I say, just skip the middlegame and move on to end game, trade trade trade, and finally you are there. If you manage in between the trades get one pawn advantage, that's the whole strategy of it, now push for the win :)

OK I See that you are playing a lot of aggressive stuff. Normaly the opening dictates the plans of the middle game.

I for oncs play the french as black. It has a clear plan:
Undermine and destroy whites center and survive the kingside attack from white. If you manage both you will be better if not winning.

Find the game planes from your openings. The White plan in Pirc ist usually playing with the room advantage and restricting the blacks piece play.

It's not just your problem, I play like this too. I try to play the openings well, which I've studied, and then I rely on my ability to read the game from time to time, which is always different. This is because I have little talent for theoretical learning, for me the best training ground to learn is playing against an opponent.

Good opening lesson should contain more than a few moves of prep. Find some videos or maybe a coach talking about common middlegame ideas stemming from the opening for both sides. Watch real games with commentary to see them in action.

If you have the opening figured out you’re doing pretty well.

Why was the original post deleted ?
Anyway... It’s my problem too. Indeed, my “game strategy” after opening can be summed up like this:
move pieces where it seems best and calculate, calculate, calculate, looking for ( or waiting for ) an opportunity;
time runs, and Mr. Blunder arrives punctually.
Not very effective.

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