Edit: Please do not use anything that can be easily determined as seed when you're trying to generate something random. Use the secrets module, and if you're unsure about how exactly CSPRNG should be implemented, don't touch it or you might inadvertently generate something insecure.
If you're unsure about the technicalities behind generating a Bitcoin address, you should also refrain from implementing your own. Any errors can result in you being unable to access your funds.
Ok, i still need to have a better understanding of this (for my knowledge). Indeed, for me a random number from a computer is always pseudo-random. I found a link that might help me:
https://docs.python.org/3.8/library/secrets.html