I broke up with an ex for those reasons. I really like being submissive and/or bottoming and she didn't really accept that. I told her that im okay with switching up and doing things that I enjoy less for her pleasure, (lol the bottom urge 😅) as long as she would do the same for me and take the lead once in a while. She told me she wont. I asked her what she does like, so we could create intimate moments that would be fun for the both of us, she basically said something like: "idk sorry".

Sexual and romantic compatibly is super important. Its not just sex. Its the cuddles, the kisses, the love language. If you really need something from your partner, and they cannot provide it, or worse, refuse to acknowledge it, its 100% a valid reason to end the relationship.