WinSCP does not work with Google or even with Oracle

Good morning,
I wanted to report a WinSCP bug on Windows 10 system. I can't connect to Google and Oracle cloud services.
I started a long discussion here:
https://forum.ubuntu-it.org/viewtopic.php?t=649668
but it remained without solution and the verdict is a WinSCP problem.
Thank you

You probably need to use WinSCP 5.20.x:
Issue 1952 – Support rsa-sha2-256 and rsa-sha2-512 SSH public key algorithms