I assume you have the 18-55mm kit lens that came with. A perfectly acceptable option is to get the 55-250mm kit lens, and really, for $130 (or $70 used at BH) it would be a crime not to have it. Next on the kit lens train is the 10-18mm, which is about $280. Both of the kit lenses are on the large side and neither are particularly fast (large aperture) but they are stabilized so shooting in lower (ish) light is possible*. I actually really like a big range zoom like the 55-250 or an all-in-one zoom like a 16-300 for days I'm just walking the parks and especially Animal Kingdom where long shots seem to be the norm. big range zoom lenses and the kit lenses don't really have great optics if you're particularly nitpicky about it but I'm usually not. Also, optical distortions can usually be mitigated in Lightroom by loading up specific profiles for each lens. LR is expensive and worth every penny.
On the other hand, a prime lens (opposed to a zoom) has a lot to recommend it. It seems like not having a zoom feature would be very limiting, but in reality, you're taking 18MP pics, you can do your zooming with the crop tool after you get home. But a prime lens like a 35mm F2 is very light fast, even if it lacks stabilization you'll do better during real low light situations (dark rides) and the lens' are much smaller and easier to manage. On that track... a Canon EF 40mm f/2.8 STM Lens is a great second or third lens. Less than $200 and it's so small, less than an inch long including the mount.
Another couple of good budget friendly primes to consider... the Canon 50mm F1.8, or Nifty Fifty is a great lens. There is a Chinese brand, Yongnuo that makes a very decent 35MM F2 lens for less than $100.
And of course, for every category and size of lens I mention there are better and better versions of it with larger aperature and higher quality glass inside to take however much money you want to drop on a lens. I started off buying cheap lenses then replace the ones I used most with better quality versions.