Just bought a r6 mark ii

I want a 24-70 2.8 or something similar, the rf 2.8 is ideal but the price point is as much as I paid for the camera lmao

what would be a close alternative to this lens that is a bit cheaper? I shoot primarily combat sports photography, mma, kickboxing so I need something that performs well in low light and is quick.

edit Thank you for the advice I got a Ef 24-70L II and I love it. 🙌