execute python script in google cloud VM

I created a vm in google cloud to run a script (bot) but every time I close my terminal the script is interrupted for no apparent reason.

The code itself has a while True with a conditional in the middle to create a delay;

while True:
    time.sleep(30)
    # do stuff

To run the script I use hohup through the cloud console provided by google ;

nohup python3 script.py &

This command generates a nohup.out file that stores the generated logs, even after executing the command no data is entered in nohup.out but the script starts successfully.

How do I run a script in a google cloud VM forever?