Free virtual machine via browser?

Question

Virtualization

Good day!
Interested in the possibility of using a virtual machine through a browser.
OS does not matter
Analogue:
https://any.run
https://turbo.net
https://distrotest.net
The OS must have a browser with Internet access.
Issue price: Free, but not with big restrictions.

Answer 1

https://guacamole.apache.org/
https://novnc.com/screenshots.html

Answer 2

What's wrong with RDP/VNC or VPN? According to the links some trash, it is not clear why.

Answer 3

https://www.onworks.net/
A lot of OC, everything is free, there is also Internet access.
(Not all OSes are presented on the main page, I think you can easily figure it out)