I have tried learning openings recently, as I feel my opening isn't very strong and most of my games openings just lead to a slow decline in my position. I have a lichess blitz rating of 2075. I have had friends who also recommended me to start learning openings too.
I have tried memorizing openings using online tools such as Chessable, but whenever I tried using the openings in games, I always start to forget them. Am I doing something wrong? Maybe I'm not putting in enough time to study these openings?
When playing some of my friends, they sometimes notice I "sort of" know how to counter a opening, but that's just because I play whatever I like and that I thought it was the best move personally, not because I studied openings. Maybe that's hindering my memorization?