At this level your main concern is avoiding blunders. Go through a mental checklist before making a move: are pieces hanging, can you opponent deliver a check etc.

One of the best tips I ever got was to look at what your piece is doing (defending) before you move it.

switch to lichess. spend an hour or so a day on lichess.org/training .

Use your knights. Forking with a knight is hard to spot and a winning combo, especially when you get a discovered check when moving the knight