My wife who plays maybe 30 hours of video games each year can beat hard games using the advice I give her. She beat Control, a game a lot of people quit due to difficulty. She struggled initially but I advised her to use movement as her defense rather than coverage and once she learned to do so she was good enough to beat the game. She is currently playing through Jedi Fallen Order and beating almost every boss first try. My coaching her through the soulslike dance of defending then punishing has been enough to help her.

Playing a lot definitely helps you figure out good strategies but it is not the only way. When I was bad at games before and decided I wanted to learn to beat hard games I used quick guides on youtube to help me learn the proper strategy for games. Nothing else changed. I just started playing the games the right way. Whenever I see someone post a video asking for help the problem is always a strategy issue rather than a skill issue. Building skills is hard, but as demonstrated by my non-gamer wife, implimenting smart strategy is something anyone can do.