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Not OP but I like ES File Explorer. It perhaps follows a desktop FM form to closely, but works for me when I need to navigate the Android file system.

Edit: There's a load of suggestions downthread, I think I might be on an older version of ES, maybe pihole is blocking some of the ads others are complaining of.

Es was the best for awhile, but it's bloated and has ads now. I switched to Solid Explorer and it works great for me, nice UI and pretty quick. No complaints so far.

Amaze File Manager does quite well, is free software [1] and can be installed from both F-Droid as well as the Play Store.

[1] https://github.com/TeamAmaze/AmazeFileManager

The Asus ZenUI one is pretty good, I use that.