At home my PCs have CIFS/SMB shared folders, it’s handy and simple to use. However I can’t find an Android app capable of browsing these shares.
There’s Android Samba client and CIFS Document provider on F-droid but both require to know the exact IP and path, you can not just browse the network like on a PC.
Every few years, the landscape of good file explorers on Play Store shuffles up. Currently, CX seems to be the way to go.