Hello! My name is Mustafa,
I am hopeful that I will be able to help you find a satisfactory solution.
Note: This is a user-to-user support forum and I am a fellow user.
If there is no option to Create contact lists in outlook for android it is because the phone apps don't have all of the functions available in the web or windows versions.
So I would recommend you create an email group through outlook for the web from your phone.
Go to your browser> log in> There should be three dots on a side of your browser click on that> desktop site and it will open outlook like it is on your laptop.
And on how to create an email group you can refer to the Create contact lists section in this article from Microsoft:
https://support.microsoft.com/en-us/office/crea...
Please let me know if this doesn't work or if you need further assistance.
Warm Regards,
Mustafa