I’m ~2000 online and got there by training tactics/puzzles and becoming really good at a few openings. I would suggest learning an opening or two for white and

I’m ~2000 online and got there by training tactics/puzzles and becoming really good at a few openings. I would suggest learning an opening or two for white and an opening or two for black. Kings Indian, modern defense, Sicilian defense, and danish gambit are some of my favorites.