does that mean that those remote desktop software like anydesk is not secured also?
Yes, and ts fine for ts use case. Its not supposed to give the most secued way to remote, and we still need to use i anyways.
Look, traditionally software like AnyDesk, Teamviewer, RustDesk are meant for IIT Support to do quick remote session to users , for troubleshooting/ install something
For that purpose, Anydesk/Teamviewer and similar software is the best solution, there is no alternative method.
It behaves liike "streaming video" when IT support remote and do their work while users are watchiing , support finish , the session end.
Person A "anydesk" to person B's laptop, whatever peson A do is the computer still take it as operated by person B. In term of security, yes, not very secured, but it's perfect for the use case. ( quick support session).
So yea , if you heed reliable, secured to remote to somewhere regularly, you need to look for vpn or ztna like cloudflare, twiingate, netbird. Each of these service has unique pro and con too , but overall its still better than "streaming" rdp.