Also I’ve just actually looked at EndeavourOS’ website and it says very clearly front and centre that it’s focused on the terminal, which is entirely not what OP was even asking for. It might be a fine distro, I don’t know, I’ve never used it or checked how many years it is since they cocked up, but it doesn’t present itself as a KDE focused distro which is what OP (and I) want!
Also I’ve just actually looked at EndeavourOS’ website and it says very clearly front and centre that it’s focused on the terminal, which is entirely not what OP was even asking for. It might be a fine distro, I don’t know, I’ve never used it or checked how many years it is since they cocked up, but it doesn’t present itself as a KDE focused distro which is what OP (and I) want!