How to restore Finder on Mac?

Question

macOS

Good afternoon!
Missing system icons in folders (back view and so on). They are also not displayed in the top menu (wi-fi, battery, and so on). By clicking on them they appear. Apparently the problem is with the Finder. This happened after updating and cleaning clean my mac.
Phyto viewers also stopped working. They start and then crash with an error.
Please help me! Where to drip?

Answer 1

Digging aside: "Never use clean my mac and similar crafts" the system does its own cleaning.
At the moment, recover from the time machine, or install the system again.

Answer 2

I solved the issue as follows:
We reboot the system in safe-mode (when loading, hold down the left shift and hold until the loading line appears under the apple). We loaded and see that everything appeared. Then just boot in normal mode.
p.s. Clearing the cache didn't help.