How to improve strategic ideas?

I'm working on becoming as well rounded as I can be at this game but I am still struggling with strategy. Like most lower rated players I spent too much time on openings but still follow principles, develop towards center, get all pieces out, connect rooks. As for tactics well there's thousands of puzzles to do out there and I've learned to look for pins and forks and all that. There's also end game puzzles I can do and study. MY ISSUE is I don't know how to study strategy. There's not really puzzles for strategy. How can I get better at attacking and developing long term strategic ideas? I know the basics, space, what color is controlled, doubled pawns but I really need advice on how to improve and study strategy. Can anyone help me?

Play over games by GMs that are the same as your openings. That will give you a feel of the general themes of the openings.

Thank you, I think maybe I'm looking more for middlegame-ish strategy. I feel I lack vision and creativity for attack and creating an attack. I play too " reaction" like and I want to start taking charge of a game and try to steer it in my direction. Most of my games now involve me reaching a modest and playable middle game but once there I sort of back off and look for tactics with no real purpose. I want to get more of a plan or strategy and use tactics to reach my strategic goal. My issue is I have no goal. I understand at my weak level this might be too much but my openings, tactics, and end games are slightly improving. My overall middle game is trash.

After looking over some of your games, you should first start with basic tactics, and opening principles.  Once you cut back on hanging pieces, and understand opening principles then you can get an understanding on strategy.

I think that knowing some opening principles is a good start, a necessary one really but this is kind of like wanting to be a painter and then knowing where to buy the supplies.  You still have to learn to paint and learn to become a better painter over time.  

There's lots of good resources here on the site to learn strategy, lots of videos as well as lessons.  If you want to get better though you have to put in the time.  Playing a lot without taking the time to learn the game is like going to school and not studying and expecting to do well on the tests.  This will just have you flunking out.

I do think that tactics are pretty important as well, you want to look to build a well rounded game, strategic concepts are certainly a big part of this as well.  Not giving away material is by far the biggest thing for beginners to work on, especially falling prey to even the simplest of tactics.  Start by focusing on not blowing games and then once you have that down look to punish your opponents for not paying attention to this.  More advanced strategy is really only for those who have gotten this far, one step at a time.

I see you've played a bunch of games, spent 3 minutes with the tactics trainer, no time on lessons, probably not a lot of time watching instructional videos I'd guess.  You won't get better making the same mistakes in games over and over again.

Go forth and learn!

Thank you, I know it's tough but please don't judge too much on my chess.com account. It's been a long long time since I've played on here or used the trainer here. Ive been mostly working offline with puzzles and the cpu for the past 2/3 months? I don't even know the date of my most recent game on here.

Im not judging, im just going by what i saw from your games. 

Looking at your most recent game against DTM1984.  Your opponent is playing an opening that makes sense, yours doesn't.  You started out by letting him take your F7 pawn with the knight and bishop action, this is an easy thing to prevent, for one thing if you have moved your E pawn this wouldn't have happened.  You don't want to be taking the knight with the king either but this at least will put a stop to stuff like this.  

Several moves later the knight is still there, I'm not sure why your queen took a little journey there only to return, that just wastes time though and as black you are already behind and need to catch up.  The queen returns home to serve herself up as a meal to this knight, that's all she wrote actually, watch for placing pieces in capture like this, especially the queen.

At this point, instead of developing, you return a knight and rook back to their original squares, so with the queen going back that's 3 pieces you've de-developed now.  When you are behind in material like this, it's also not good to trade pieces like this, without a good reason to, and the goal here isn't to simplify the win for your opponent.  Taking the exchange is fine generally of course, and the opponent traded off both rooks for minor pieces, unless this leads to a threat that's a good idea though and this did provide a small spark of hope to a position otherwise horribly lost.

So the goal now would be to use the rooks together and hope your opponent blunders, which players of this rating often do. I'm seeing you needing to pay a little more attention to guarding your pawns here, Your only chance here was to try everything to try to queen a pawn, and have him give up material to prevent this, not leave them hanging or trade them off.  Even if this seems hopeless, you haven't resigned yet, so if you're still in the game then you've decided it's still worth trying to save but you have to commit yourself fully to that.

With 2 rooks you should be looking for them to work together, and your pieces working together generally, there's a strategic concept you can use.  Your opponent will be trying to fork one of them with his queen, make sure you stay aware of that, and don't just grab a pawn like you did there and miss the fork.  Pawn for a rook as it turned out.

At this point it was just a matter of time and white mercifully ended things with a nice mate.  

One of the things we can do to help ourselves is to go back over our games and spot our mistakes and try to avoid them, there are a few here worth noting and probably plenty to keep you busy with your other games.  You won't find things like this in grandmaster games of course but there's plenty to work on and as you go, perhaps looking at games from players a little better, to keep things on the same planet more.  Good luck!