Photos Are Rarely Tack Sharp Even With Good Equipment and Understanding of Camera

Hello everyone,

I am a few years into my photography journey and there is one thing that I just can't seem to figure out. My photos are just never (or very very rarely) tack sharp. I have looked up a ton of videos and I've heard all of the usual rememdies- higher shutter speed, lower ISO, better lenses, etc. I am shooting with a Canon R5 and Canon R6 both with IBIS ad mostly use L lenses. My most frequently used lenses for portrait work are my 50mm f/1.2 and my 135mm f/2.0. So, I don't think its a gear issue. I've experienced the same problem throughout my journey with other bodies too- 5D4, 7D2, R6. It seems that even at a relatively high SS and low ISO, 95% of the time, my shots just aren't as sharp as I see from others. It seems that nothing in the photo most of the time is sharp so I don't think its an issue of missed focus, it seems to be motion blur. I don't understand what I am doing wrong and it is really frustrating me to see other photographers who have been doing it for less time with cheaper equipment taking sharper photos than I am. I have narrowed it down to I either have the worlds most unsteady hands, or there is some type of editing process that everyone else knows but me. Here is a RAW photo, unedited from a shoot last weekend. I always focus on the eye closest to me. I usually shoot around f/2.0 for single person shots such as this but this is f/1.8. SS- 1/200 ISO- 100. This same level of sharpness seems to be the case even with images I took at 1/400 though which I would assume with IBIS would be fast enough to negative hand shake?? Thanks for any advice!