Platform: Local Server - Ubuntu

Hi everyone,
I’m totally new to this topic and i’ve been struggling with the set up part.
I have a GeForce MX150 on an Asus Laptop.
I am unable to install properly the Nvidia driver (tried with 390 and 440 version) and obtain the first picture of this post. I have followed the instructions but get the error :
“NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.”
I’ve looked at different forums but most of them seems to reinstall the driver and things work which is not my case.
Does someone encounter the same issue ?
If you need more info on my config or previous installation let me know.