My great fail is that I cannot learn opening or initial play.
Normally I only play when I can connect to my mobile app (Chess Free on iOS), and play at a very low level (adjusted as a single bar), and repeat that level until I have some domain of it. Unlike a human player or a friend, that sort of games cannot teach me which are the errors I am repeating consistently (some adaptive app?).
I've tried puzzles, but they are so artificial, I can't learn how to start with them.
I normally can defeat some people in apps such as chess.com, but very fast I reach a level superior than my real one, when I do not defeat anybody, and I don't get how to improve. After that the app download me again into trivial opponents, and the same repeats over and over.
So I don't increase my level, and I've been stuck in that from years, without any advance when facing real players.
Which I would like is to freeze the difficult level, and play let's say 100 times with players at my very exact, and me being the person to decide when it is time to move onto better players, let's say by raising 50 points only?.
Or equivalently, is there some app playing with strong focus on a specific selectable opening, let's say for example, the Dutch defense, and the game could go in turn of such opening? Making me able to play 100 times an specific opening, before increasing the level of such opening and/or before changing such opening?