"Why do so many people dislike maths"
Off the top of my head I can think of two important factors here, one would be the way maths is taught and the other would be what I'd call cultural attitudes towards maths, and they're partly linked to each other. Context for my answer: currently doing Advanced Higher maths but I'd never describe myself as someone to whom it comes naturally.
So whenever I hear someone say "oh God, I just can't do maths", or "I hate it", or "I just can't get it", I think their problem tends to lie more with maths teachers and maths teaching rather than with maths itself. A lot of people before have talked already about how you either understand a concept almost immediately or after a bit of thought, or you don't get it at all, and I'd generally agree. The thing is, I think that unless you can work something out yourself or have helpful friends, quite often you won't end up finally understanding the thing because either the class will move on quickly or for whatever reason (either too many people to give individual attention too or feeling too embarrassed to ask questions, at a guess) the teacher won't be able to explain it to you again. All these little things and missed concepts can start to pile up, and by that point if you didn't naturally love the subject in the first place - or even if you did, because you used to understand everything - then you're likely to end up either apathetic about maths or actively disliking it. Which, of course, makes you less inclined to go the extra mile to understand the next thing, and so on down the vicious cycle until you just assume that it's not for you.
I think that this tendency to give up on maths is also worsened by our attitudes to maths as a society. I think we (referring to the UK but probably to its neighbours as well) have a sort of cultural belief now that you can either do maths or you can't - it's an ingrained fixed mindset across most of society. (Idk how many people are familiar with that term, basically fixed mindset = "People who can do the thing are naturally talented and people who can't do the thing are stuck", the opposite is growth mindset = "If I can't do the thing then if I work hard on it I could become able to do the thing."). This makes people disinclined to try to put the work in when they don't understand something in maths, because they don't see their aptitude for it as something that they can change. Sure, I know people who get along really well with maths and people who probably really honestly don't, but I think that the vast majority of people lie somewhere in the middle, and are artificially polarised towards opposite ends of the scale through a combination of the fixed mindset and the teaching problems I outlined earlier.