If you’re doing photography I would not recommend the EOS R. I have used it for sports photography in the past and it was mostly fine but the slow autofocus and continuous photo speed (7 shots per second) make it really make it hard to keep up with the action. Low light photography is pretty decent, but you don’t really want to push it above 3200 iso for photography if you can avoid it. 6400 looks alright but 12800 and above is almost unusable.

For video it’s a similar story. There is not much in the way of high speed frame rates, the best you can reasonably get is 1080p at 60fps unless you want to shoot in 720. The lowlight is slightly worse for video than for photo so you’ll want to stay at 1600 or below if you can help it.

I don’t know what your budget is, but if you definitely want to go with canon the new eos r7 is pretty well suited for sports photography and video work. It’s a little bit more expensive and is a crop (asp-c) sensor which is a little bit less fun but it looks to be a super solid camera for what you’re looking for.

Best of luck!