After watching some of your recent chess games, I found out many mistakes and they all belongs to basics of chess understanding.

Before going to my suggestions, let’s watch one of your chess game.
Opening Suggestions:
With white pieces, you are trying to play Scotch gambit, which is good and sound. My suggestion is that you should stick with it and learn its theory.
In other some games with white pieces, you are trying to achieve same setup which is not possible in chess, for example against Scandinavian Defense, you are ignoring the d5 pawn, which you should capture, and you are developing the bishop to c4.
My suggestion is that in Scandinavian Defense you should always capture e takes d5, this move will give you the advantage with white pieces.
With black pieces, you are facing the same problem, you are just developing pieces and controlling the center with black pieces which is not enough!
Let me explain why? because with black pieces you are always one tempi down in the opening, and please remember that chess is a precise game.
You must look at white pieces, and you must know what white player is going to do, which variation he is playing and what are his plans, and then you have to respond with move by move.
Please remember that you should create a opening repertoire with black pieces, and its my suggestion that you should learn Scandinavian Defense against 1.e4.
Middlegame Suggestion:
In theĀ middlegame, you often hang your piece without any protection, it often occurs in beginners game.
Now here is a tip for you and for all beginners for avoiding blunders and hanging pieces.
Before moving any piece or pawn, check at every pawn and pieces and see if there is any unprotected piece, if you find any, please protect it, that way you will never blunder in chess.
Conclusion:
In the opening, you have to learn opening theory, and you have to create an opening repertoire.
In the middlegame, you should look for unprotected piece and pawn and try to fix as soon as possible.
If you still have any questions, feel free to ask.