Downloaded an recovery frew app and got kicked out of system

While some people are successful at resolving the "Ownership" issue by reinstalling macOS.

However, if that does not work, then you will need to try a DFU Firmware Revive which resets the security enclave chip & system firmware.

And if the "Revive" doesn't solve the problem, then a DFU Firmware Restore will be required which does the some of what the "Revive" does plus it resets the internal SSD & pushes a clean copy of macOS onto the internal SSD.

Unfortunately the "Revive" & "Restore" requires access to another working Mac currently running macOS 15.x Sequoia.

How to revive or restore Mac firmware - Apple Support

Goethe4life wrote:

Any ideas how to solve? Thanks

Start Over from Scratch 

For Apple Silicon computer >> Use Disk Utility to erase a Mac with Apple silicon.

For Apple Intel computers >>   Use Disk Utility to erase an Intel-based Mac followed by How to reinstall macOS

Always make a Time Machine Backup  before  proceeding 

If going this route - I suggest Not using Startup Assist to migrate everything back.

Goethe4life wrote:

I am the owner of thid macbook and how can that be elimated then? At the end I already erased the drive and just asking me how someone can replace the owner or did I delete it? Thanks

Btw, I am owner and admin. The diffefence is clear..

This computer >> MacBook Pro (16-inch, 2023) - Technical Specifications

Apple Silicon computer

You may need to How to revive or restore Mac firmware

Goethe4life wrote:

Hello,

Please help as I think that I got hacked so far I got kicked out of my mac (2023) and system and drivewere deleted as well.

Now tryin to fix that, but I cannot reinstall Mac OS Sequoia due to the lack of ownership.

Any ideas how to solve? Thanks

The " Owner Account of this computer "  has that privilege to add, remove, upgrade or downgrade accounts.

This would include adding more Admin Accounts and / or downgrading an ADDED Admin account 

Set up users, guests, and groups on Mac

Normally the " Owner Account  " is the very first Account used when the Computer was Very First Setup as New and out of the box.

Below link will provide additional insights about the Difference between Admin Accounts and Owner Accounts  

https://eclecticlight.co/2021/07/18/last-week-on-my-mac-the-perils-of-m1-ownership/

Suggestion and if I may

To get the replies to your question in chronological order by Date 

Click on your User Name  >>   >> " Edit Profile and Preferences "

Scroll way down and look for >> >> " Other Preferences "

Change the >> >> " Default thread sort " to Oldest 

This is mentioned only because you seem to replying only to yourself

This can happen even to the best of us

Well put 👍