I've been following many of the posts where some of the features of specific cameras are touted to be better than others. Just recently there was a discussion on this forum about Sony A1 as a replacement for a Nikon D850, and then I threw the Nikon Z9 in as an option for consideration, and there was a discussion about how good each of the A1 and Z9 was regarding eye-af tracking, etc. Sometimes such comparative discussions can be a good thing, sometimes not. I reckon it's very important to consider carefully what the OP is saying or asking so that we specifically deal with that in the ensuing discussion. It is easy for any one of us to say the wrong thing, or say something that's not relevant to the discussion, and cause offense in the process.
My photography hobby started back around 1970 with a Kodak Instamatic. From there I progressed to other point-and-shoot cameras, then to a Pentax SLR circa 1978, then the first digital point and shoot in 2000, then on to DSLR's. Never during this long hobby of mine had I ever had a top of the line camera and lenses since I had to balance my needs rather than wants against the fact that photography is a hobby for me and not a profession.
So today I use a Nikon Z6II and a Nikkor 200-500mm F/5.6 for wildlife and BIF work. Would I love a Nikkor 500mm PF F/5.6 lens? Absolutely. Can I justify its cost? Not really, especially since I hope to source the Nikkor Z 200-600mm as soon as that launches. So in the meantime I have to make do with a less than stellar performing lens for BIF work. The lack of reach I experience with this lens on the full frame Z6II versus the DX Nikon DSLR's I used in the past also is problematic. For that reason I recently acquired a TC-14E III to extend my reach. So here I am with a body that's not best suited for shooting fast-moving wildlife, coupled with a slow-focusing lens, and accurate focus becomes spotty with the teleconverter mounted. I drool with desire when I think of the A1, R5, or Z9, but I won't purchase one of those unless I unexpectedly inherit a lot of cash from some distant relative.
So while the fortunate folks on this forum go out with the top cameras from Nikon, Sony or Canon and they machine-gun the flying birds and fast-movers, and get a keeper rate upwards of 80% or more, I have to work that much harder to get a keeper rate of less than 50%. But man, the satisfaction of getting at least a few keepers from such an outing is for me that much more rewarding than it might have been had I been getting a sky-high keeper rate because of the mechanical abilities of a super camera/lens combo. It's easy to become used to such great capabilities in a camera and start taking them for granted. Now if Nikon can improve the subject tracking of my Z6II with firmware and provide me with a more capable lens, I would probably be relatively satisfied, even while I will still envy those who can spend the bigger bucks on the more capable gear.