How to run Ubuntu on VirtualBox the first time?

Question

virtual box

windows 10 - host
Created a machine with ubuntu 20.04, then installed the guest additions, as well as several gcc make perl nginx vim packages. And the problem is that I successfully run this ubuntu only after 10-20 attempts, which is very uncomfortable! the rest of the attempts stop at freezing either before entering the password (when entering ubuntu), or after, or ubuntu is loaded without add-ons with an eternal error sign.
Please tell me what could be causing this problem?
I set the parameters for the machine as follows:
4 Gb RAM
2 streams from the
video processor 128 Mb
50 Gb of disk space
network bridge the
rest of the parameters are more or less default, and I don’t know what they really affect to indicate them here.
Despite the fact that I wait for the OS to load for several minutes, with dozens of attempts it turns into an hour of time just to run ubuntu in VB.

Answer 1

See logs
And what kind of error is that in VB?