Error updating OSMC

I have RSBRY PI
very old… I installed it 5 years ago and havent updated it since
(VERSION_ID=“2018.04-1”)
all worked fine
now, I wanted to add a new app and got failure error: something with python version
so I tried to update my OSMC
from My OSMC menu I got some “unable to update” error
I tried form the command line:

sudo apt-get update
Ign:1 Index of /debian stretch InRelease
Ign:2 http://security.debian.org stretch/updates InRelease
Err:3 http://security.debian.org stretch/updates Release
404 Not Found
Ign:4 Index of /debian stretch-updates InRelease
Err:6 Index of /debian stretch Release
404 Not Found
Err:7 Index of /debian stretch-updates Release
404 Not Found
Reading package lists… Done
E: The repository ‘http://security.debian.org stretch/updates Release’ does no longer have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The method driver /usr/lib/apt/methods/https could not be found.
N: Is the package apt-transport-https installed?
E: The repository ‘Index of /debian stretch Release’ does no longer have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository ‘Index of /debian stretch-updates Release’ does no longer have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
osmc@osmc:/media$

and when trying “sudo apt-get dist-upgrade”
i get a lot of 404 errors. and stuck at 0%

and now I don’t even get My OSMC menu on the TV

any Idea of how to update?

Thanks

It’s too old - you need to reinstall OSMC.

Thanks
will try
but it will take a while