I cannot get into Metroid games. Metroidvanias are one of my least favorite genres and this is the game that pioneered the genre. I don’t like the lack of direction and reliance on backtracking to progress. They feel like a way to pad out time rather than make the player have an enjoyable experience. I can’t speak for the Prime games, but 2D Metroid has clunky combat too. Whenever I want to aim in a specific direction I end up walking instead. Don’t even get me started on the jumping physics. Each jump doesn’t have as much momentum as other series, so it makes those platforming sections more irritating.
I’m glad other people can enjoy them, but I just can’t.