Bullseye apt update issues

Hi! i’m using rockpi model 4a with it’s distro and get these issues on apt update:
Get:1 http : // ://security.debian .org/debian-security bullseye-security InRelease [2682 B]
Get:2 http : // ://httpredir.debian .org/debian bullseye InRelease [2682 B]
Get:3 http : // ://httpredir.debian .org/debian bullseye-updates InRelease [2682 B]
Get:4 http : // ://apt.radxa .org/bullseye-stable bullseye InRelease [2682 B]
Get:5 http : // ://httpredir.debian .org/debian bullseye-backports InRelease [2682 B]
Err:1 http : // ://security.debian .org/debian-security bullseye-security InRelease
Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
Err:2 http : // ://httpredir.debian .org/debian bullseye InRelease
Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
Err:3 http : // ://httpredir.debian .org/debian bullseye-updates InRelease
Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
Err:4 http : // ://apt.radxa .org/bullseye-stable bullseye InRelease
Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
Err:5 http : // ://httpredir.debian .org/debian bullseye-backports InRelease
Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
Reading package lists… Done
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
E: The repository ‘http : // ://security.debian .org/debian-security bullseye-security InRelease’ is no longer signed.
E: Failed to fetch http : // ://security.debian .org/debian-security/dists/bullseye-security/InRelease Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
E: The repository ‘http : // ://httpredir.debian .org/debian bullseye InRelease’ is no longer signed.
E: Failed to fetch http : // ://httpredir.debian .org/debian/dists/bullseye/InRelease Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
E: The repository ‘http : // ://httpredir.debian .org/debian bullseye-updates InRelease’ is no longer signed.
E: Failed to fetch http : // ://httpredir.debian .org/debian/dists/bullseye-updates/InRelease Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
E: Failed to fetch http : // ://apt.radxa .org/bullseye-stable/dists/bullseye/InRelease Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
E: The repository ‘http : // ://apt.radxa .org/bullseye-stable bullseye InRelease’ is not signed.
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: Failed to fetch http : // ://httpredir.debian .org/debian/dists/bullseye-backports/InRelease Clearsigned file isn’t valid, got ‘NOSPLIT’ (does the network require authentication?)
E: The repository ‘http : // ://httpredir.debian .org/debian bullseye-backports InRelease’ is no longer signed.
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.

What can I do?
P.S. sorry for broken links. I can’t past more than 2 links in the post.

I also tried:
wget -O - apt.radxa.com/bullseye-stable/public.key 2 | sudo apt-key add -

But got gpg: no valid OpenPGP data found.

I found partial sollution: changing http to https in /etc/apt/sources.list helped with some repos but
E: The repository 'https://apt.radxa.com/bullseye bullseye-stable Release' does not have a Release file.
I changed it in /etc/apt/sources.list.d/apt-radxa-com.list and this is the only repo which still doesn’t work.