Hello, I need help from a support, I tried to repair my laptop, I always make a mistake and I don't know what I did, I broke it harder and whatever I tried to do, it always showed me mistakes.... please helpppppp me!
MacBook Pro 15″, macOS 11.1
When posting screenshots of error messages in a foreign language while posting in the English speaking forums you really should provide a translation since I cannot cut & paste the message to have it translated.
It appears you had macOS 11.x Big Sur installed and are now trying to install macOS 10.12 Sierra. Are you trying to downgrade your OS or are you trying to dual boot? macOS Sierra does not work with the new APFS file system introduced with macOS 10.13 High Sierra, so you should erase the whole physical SSD as GUID partition and MacOS Extended (Journaled). If you want to dual boot, then you will need to split the main partition so you can install macOS 10.12 to the new partition.
You can reinstall macOS 11.1 Big Sur by booting into Internet Recovery Mode using Command + Option + R (in theory since sometimes this key combination will revert to booting the original macOS for your system).
Since recent versions of Disk Utility hides the physical drive from view by default you can use the instructions in this Apple article for to reveal the physical drive so you can erase the whole physical SSD drive:
https://support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac
If you have access to another Mac, then you can create a bootable macOS USB installer (this article also has links to various macOS installers from 10.11+):
When posting screenshots of error messages in a foreign language while posting in the English speaking forums you really should provide a translation since I cannot cut & paste the message to have it translated.
It appears you had macOS 11.x Big Sur installed and are now trying to install macOS 10.12 Sierra. Are you trying to downgrade your OS or are you trying to dual boot? macOS Sierra does not work with the new APFS file system introduced with macOS 10.13 High Sierra, so you should erase the whole physical SSD as GUID partition and MacOS Extended (Journaled). If you want to dual boot, then you will need to split the main partition so you can install macOS 10.12 to the new partition.
You can reinstall macOS 11.1 Big Sur by booting into Internet Recovery Mode using Command + Option + R (in theory since sometimes this key combination will revert to booting the original macOS for your system).
Since recent versions of Disk Utility hides the physical drive from view by default you can use the instructions in this Apple article for to reveal the physical drive so you can erase the whole physical SSD drive:
https://support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac
If you have access to another Mac, then you can create a bootable macOS USB installer (this article also has links to various macOS installers from 10.11+):
Hello, I need help from a support, I tried to repair my laptop, I always make a mistake and I don't know what I did, I broke it harder and whatever I tried to do, it always showed me mistakes.
