Do you have any specifics about why Finder is bad? I switched to macs full time 5-6 years ago and while Finder is nothing to write home about, it generally just works and is a fine default?
The layout, how changing layout affects / doesnt affect other finder instances, how window resizing works, trying to show hidden files, trying to show specific folders (~/Library), having to modify settings to show the file path, trying to copy a file path
Also it’s Command, Shift and Period to toggle showing hidden files.