Hmm sorry to hear. Sounds as though you are trying to improve the right way!
Playing blitz will not help you improve much (if you do that) but rather instill bad habits. Slow games, with review.
At 1200 most games are decided by fairly "simple" tactics. I would highly recommend chesstempo.com for tactic training
But almost sounds like you could use a tutor, mentor, couch or something to get ya past that plateau.
I have been stuck for years at 1200. I can't get better. I just blunder every 2 moves and can't progress. I'm doing the chess lessons and see no progression whatsoever and I also annalyse everygames and replay my bad moves. Still stuck on the begginer level since I joined like 5 years ago