Sounds similar, but subtly different than my settings.
probably not same use case as I.. but I do take a LOT of band shots with heavy motion in low light .. .and take pics of my kids, also a lot of motion.. I don't think I get those kind of out of focus issues with my R5 (used to with my older canons)
Agree with many comments folks have indicated that shutter speed is important.. more so when dealing with such high megapixels and shallow depth of field. Don't be afraid of Auto ISO and having high ISO, if exposed right many modern denoise algorithms do a good job.
I usually use Manual - put my shutter speed as fast as I can get away with (depends on light but try for 1/400th if I can or higher) depth of field, again depends on lighting.. but ISO leave as AUTO and lock it to a max of 6400 ISO (too noisy beyond)
for the auto focus there were a few odd surprises when I tried things one of the first things to do is turn off continuous AF.. it drains batteries and found it left you with less focused images in long run.
For the Autofocus method for people I use:
AF Operation: SERVO AF
method:
+ Tracking
subject: people
Eye Detection: Enable
Continuous AF: DISABLE
AF assist beam: off
Servo AF (this is important): Case 2
Initial Servo AF pt for:
[[]]: (this centres people tracking by default...centre still seems best to grab focus and then compose)
IBIS and IS both on
I also have focus set to a Back button and take the image on the main button.. I basically focus with the back button first and keep it pressed and then use the front button to take the images. It allows you to focus and start tracking and compose prior to taking the images.
attaching a sample of what I mean 'motion in low light' ;-) ... R5 with Sigma 20mm ART at 1.8 Aperture.. iso 6400 1/400th
View attachment 207709