You could also try out a Steermouse free trial, it has MX Ergo S on the recommended mice list, so MX Ero is a maybe
https://plentycom.jp/en/steermouse/
I don’t have a mouse on my Mac now (trackpad too good) but Steermouse has been around for about 25 years and I used it for many of those. Way less awful than the Logitech software.
SteerMouse is legendary. I think it’s been around since Jaguar? Case study in getting it right the first time.