When I was in high school, I was really firmly on the "no gap year" team. Then I started uni, and my opinions really changed. In the end, it's completely up to you - do you want a break? Do you feel ready to start uni? Do you need (or want) to save up money by working for a year? Are you not really sure what you want to do?
Like, in the end, I'm still glad I decided to not take a gap year because I'm really keen to actually qualify as a physio, but taking one year off isn't a big thing - it's tiny in the grand scheme of things. What's an extra year? Like, so many people chop and change between degrees that they might as well have just taken a gap year or something. Plus, uni's still gonna be there in a year's time, and the workforce is still gonna be there in a few years' time, but maybe those travel plans you were making won't be possible in a year or a few year's time.
I think taking a year off would be great to revitalise yourself a bit and all that - by the middle of last year I really regretted not taking a gap year and thought that my mental health would be a lot better and I'd be a more chill person if I had taken one.
All the people I know who have taken gap years have found them to be really good. One of my high school friends didn't know what she wanted to do post high school so deferred a uni offer and started working full time at a real estate agent and she's found that it's her dream job - maybe she wouldn't have found it if she had have just jumped straight into uni.