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.
Don’t know what phone you have, but the built in My Files app on my Galaxy s23 has SMB support. Lists and connects to my Linux samba server and my Windows shares perfectly.