Best camera body for low light action sports photography?

[Mfm778]

I am newer to photography, but I have learned a good bit here recently about things I need to purchase to improve my photo quality. I currently have a Rebel T7 and I have just invested in a 70-200 f2.8 lens. I love the lens and have used it with a friend’s 5D body but I wasn’t too thrilled with the results of the photos. I am taking photos outdoors under fluorescent dim lights in the dark most of the time. I am shooting very fast paced events like barrel racing and bull riding. There is a ton of movement involved in rodeo sports and I know that while the lens makes a huge difference the body of the camera itself has a very large impact on photo quality as well. Suggestions for a body that would be compatible with the 70-200 f2.8 lens for night time sports photography? I’m not looking to spend an arm and a leg at the moment but I would love to hear any and all input!  

[Ron888]

Low light and action are hard tasks for cameras.Off color flickering lights dont help the situation.
You have a great lens and reasonably good body.I hear good things about the full frame cameras but they might not necessarily be needed.Maybe some tweaks to your settings will help?
In what areas is it giving you problems?Focus speed,color or noise perhaps?

**EDIT: My apologies! I misread which camera you have.
Your Rebel T7 is a very basic camera. Newer and/or higher spec cameras offer far better performance, especially their ability to track moving subjects,and do it in low light.

[Tronhard]

Hi and welcome to the forum:
Generally a full-frame camera will perform better in low light situations if it has a similar MP value.  That is because the photosites (the wells that capture and focus the light to the sensor) are that much larger and thus more efficient.  You don't need a high MP count, you will get better results in lower light with fewer and larger ones as far as sensitivity goes.
It is difficult to suggest the best camera body for your purposes because  'not an arm and a leg' is a rather nebulous value.  Still, you could look for a used, good condition 5DIII or IV, or even save up some more and get something like the EOS R6, which offers IBIS and animal/human face and eye tracking.   It has a full-frame 20MP sensor that has an excellent dynamic range and you can get them fairly cheap as there is a later (and more expensive) variant out there.