Blocking of sites and resources can be carried out for various reasons, such as government censorship or corporate restrictions.
All the proposed methods provide a high level of anonymity. Hovewer, complete anonymity on the Internet is difficult to achieve. By using VPN services and secure browsers, you significantly increase the level of your privacy.
Yes, you can combine different methods to enhance your anonymity and security. For example, use a VPN in combination with a secure browser.
If you want to access Bilbet only on your work computer, you just need to install bypass methods there. If you want to freely use Bilbet on all devices, you should install the necessary tools on each of them.