Deleted /etc folder

ármin256 wrote:

As I see I do not have time machine backup right now.

Oh, okay. That makes things much easier, then. No backups means any user data here has no value, so just wipe the Mac and re-install macOS. No need to migrate anything, and no need to recover added files and apps.

If that presumption is incorrect and the data here does have value, then go get a backup now, because you’re going to be at least re-installing, if not erasing and reinstalling.

How to back up your Mac - Official Apple Support

I’d first try re-installing macOS itself, without erasing:

How to reinstall macOS - Apple Support

If that fails, erase the Mac and allow the new macOS installation to restore (migrate) your files from your backup:

Use Disk Utility to erase a Mac with Apple silicon - Apple Support

Do you have a recent Time Machine backup? you might want to restore that

ármin256 wrote:

Now I save some personal stuff to an external SSD and then I re-install my MacBook. You think it will work?

I would follow what I have previously linked, if you want to restore your environment using the Apple-provided procedures and tools, and particularly without added manual effort. If you don’t, well, have at.