I have both the R7 and R5 bodies and love them both. The R5 is always my "go to" camera for most situations, however the R7 is used for wildlife where I need the reach and occasionally the faster frame rate. I've been happy with images from the R7.

I find the R7 autofocus to be a little quirky at times compared to the R5. The R7 has newer autofocus "improvement" technology, so maybe my brain just hasn't grasped it fully yet. One customization I recently implemented that really helps me was to set dual back button focus buttons, one with spot focus one-shot, and another button with animal eye recognition and servo. Now I can switch modes as fast as my thumb can slide left or right an inch without moving my eye from the EVF.

From my experience, reading the manual will teach you about 20% of the capabilities. Reading specific topic articles and watching YouTube videos will greatly expand your knowledge of what the camera can do. There are layers and sub-menus within the menu system that you may not even notice at first, and certainly won't understand without some detail explanation that is not included in the manual. Follow the breadcrumbs. Learning one thing will lead to something else, and so on.

I recently purchased the R7 a week before going on a cruise around Europe. I took 6,000 shots with it and it never missed a beat. I found the eye tracking was absolutely spot on both for people and animals.
No problems at all using the 600EX flash either.
But (as with just about every piece of any type of kit) I am also annoyed that the viewfinder shuts off after a couple of seconds. Our last trip was to spot dolphins off Gibraltar. Very fast creatures and totally unpredictable as we know but the camera coped superbly at 30fps with the eye tracker tracking the dolphin's blow hole on the head.
Many shots taken but only when the viewfinder was reactivated.
I have tried every setting in the power saving menu and NOTHING stops the viewfinder from shutting off.
Perhaps I should have used my trusty 5DIII?
Rob

I have an R7 and an R5. I think the R7 is a fantastic camera.

The only downside is that it requires a different flash. There is an adapter that allows the use of any Canon mount flashes. The slash mount shoe doesn't have the traditional contact arrangement. Instead it has a contact point at the front of the shoe.

30 megapixels in an APS C sensor is a great achievement and I like that my RF lenses are 1.6 times more telephoto on the R7. That makes it great for wildlife and sports photography.

I found an excellent video on how to set up the R7. Canon EOS R7 User's Guide YouTube Jared Polin Oct 7, 2022.

It is over 1.5 hours long. I am at about the 1/2 hour mark and find the video very helpful.

https://www.google.com/search?q=What+is+EXP+SIM+on+a+Canon+R7&sxsrf=APwXEddY-Cf0wigkh-ogFHvhMe8G79-AWA%3A1687993231748&source=hp&ei=j7ucZNCrK-zakPIP7t6_sAo&iflsig=AOEireoAAAAAZJzJn-drHfQHe42mAR7Jh5BBc1ohhgnI&ved=0ahUKEwiQr9bniOf_AhVsLUQIHW7vD6YQ4dUDCAs&uact=5&oq=What+is+EXP+SIM+on+a+Canon+R7&gs_lcp=Cgdnd3Mtd2l6EAMyBQghEKABOgcIIxCKBRAnOgQIIxAnOggIABCKBRCRAjoLCAAQgAQQsQMQgwE6EQguEIAEELEDEIMBEMcBENEDOgsILhCABBCxAxCDAToFCAAQgAQ6CwgAEIoFELEDEIMBOggIABCABBCxAzoNCAAQgAQQFBCHAhDJAzoICAAQigUQkgM6CggAEIAEEBQQhwI6BwgAEIAEEAo6CAgAEBYQHhAPOgYIABAWEB46CAgAEIoFEIYDOgUIIRCrAjoICCEQFhAeEB1QAFiiXmDFZGgAcAB4AIABf4gB2RSSAQUxOS4xMJgBAKABAQ&sclient=gws-wiz#fpstate=ive&vld=cid:038aaa44,vid:5BGgRgzCsQU

I found an excellent video on how to set up the R7. Canon EOS R7 User's Guide YouTube Jared Polin Oct 7, 2022.

It is over 1.5 hours long. I am at about the 1/2 hour mark and find the video very helpful.

https://www.google.com/search?q=What+is+EXP+SIM+on+a+Canon+R7&sxsrf=APwXEddY-Cf0wigkh-ogFHvhMe8G79-AWA%3A1687993231748&source=hp&ei=j7ucZNCrK-zakPIP7t6_sAo&iflsig=AOEireoAAAAAZJzJn-drHfQHe42mAR7Jh5BBc1ohhgnI&ved=0ahUKEwiQr9bniOf_AhVsLUQIHW7vD6YQ4dUDCAs&uact=5&oq=What+is+EXP+SIM+on+a+Canon+R7&gs_lcp=Cgdnd3Mtd2l6EAMyBQghEKABOgcIIxCKBRAnOgQIIxAnOggIABCKBRCRAjoLCAAQgAQQsQMQgwE6EQguEIAEELEDEIMBEMcBENEDOgsILhCABBCxAxCDAToFCAAQgAQ6CwgAEIoFELEDEIMBOggIABCABBCxAzoNCAAQgAQQFBCHAhDJAzoICAAQigUQkgM6CggAEIAEEBQQhwI6BwgAEIAEEAo6CAgAEBYQHhAPOgYIABAWEB46CAgAEIoFEIYDOgUIIRCrAjoICCEQFhAeEB1QAFiiXmDFZGgAcAB4AIABf4gB2RSSAQUxOS4xMJgBAKABAQ&sclient=gws-wiz#fpstate=ive&vld=cid:038aaa44,vid:5BGgRgzCsQU

In addition to their lower 24MP resolution (versus the R7's 32.5MP)...

Also, the R10, R50 don't have IBIS... of the APS-C R-series, only the R7 has in-body image stabilization.

There are several YouTubers who have done extensive shooting with R7. I was concerned about problems with rolling shutter effects... "Wild Alaska" doesn't think it's a big deal and he shoots a lot of wildlife with his cameras. Besides, the R7's mechanical shutter still manages 15 frames/sec, and then there's no concern about rolling shutter (up to 30 frames/sec in e-shutter, which also is "silent").

I forget which, but some (all?) of the APS-C models below R7 don't have a mechanical shutter... only an electronic shutter. I guess there is a "1st curtain" option with the e-shutter, to help avoid rolling shutter. However, the R7 also can be set up to close the shutter during lens changes, to help keep the sensor clean. That's not an option on the models with no mechanical shutter.