I was in your situation recently.
10+ years ago, I had sold all my Canon kit including a 5DMkII and some EF L lenses and I wanted to pick up photography again. I was luckily not committed to a specific brand since I didn’t have any of my kit left so I was free to look at other platforms. I had a few friends with cameras and tested some different platforms out but ultimately settled on Nikon.
I currently have a full frame Z6II mirrorless and I like it very much. It’s lighter and more compact than my Canon setup was, and I also feel like the lens selection and price (both Z and F) are better than it was when I had Canon. My favorite part of mirrorless is the focus peaking. I find myself using it along with manual focusing for about half my shots.
Look around at other platforms like Nikon, Sony, OM, etc. before you commit because it would be a good time to switch of you did want to. If you stay with Canon, I definitely recommend looking at mirrorless.
I rely pretty heavily on manual focus and focus peaking. Primarily because my main lens I find myself using is my 70-180 AF Macro with the FTZ adapter, which doesn’t autofocus with the Z bodies. When using Z lenses (like the 24-120 S) then I’ll use autofocus along with peaking.