Getting Pushed around
The most important tactic of all is safety. If your opponent can easily thwart you with his next move, then your move is worthless.
Help! I keep getting pushed around by minor pieces.
Do I just need to study tactics or something?
Yes.
I looked at three recent losses in online. You dropped a queen to a discovered attack, a rook to a knight fork, and 12 points of material by simply leaving pieces en prise.
Tactics is four things.
1) Recognizing your opponent's targets
2) Recognizing your own targets
3) Knowing how to exploit #1
4) Knowing how to defend #2
Those are where your losses are coming right now. If the whole topic of tactics/attack/defense seems too big to overcome all at once, just concentrate at first on recognizing two factors in your games: which of your opponent's pieces are undefended, and which of your own pieces are undefended. Those are your targets, and your defensive concerns at the <1200 level.
(ETA: no offense on the "<1200" comment. I see you're rated higher than that in turn based. I was simply going off your live rating, which was the point you addressed in the OP.)