I’ve been playing chess consistently for over five years. I'm rated 1600 and would love to improve my ELO, but I feel like my chess skills have been deteriorating over the past 2 years. I can’t find an opening I feel comfortable playing. My middle-game skills are bad, my end-game skills are mid, and I’m losing to players lower than my level a lot more often than I would like. I genuinely don’t know how to improve my training regimen. I feel like I’m doing everything right. I’m doing puzzles constantly. I am playing multiple games, I’m looking at endgame drills, and yet I don’t see any improvement.