Installing rasa on ubuntu os

I am trying to install rasa on ubuntu OS but it is showing me error of Tenserflow. I am using Python3.7.9 and also i have tried this with python 3.6.9. i have deployed my bot on windows server. Now I am trying to deploye on ubuntu server.

Hi, you have a spelling error

It’s tensorflow, pip install tensorflow==2.x

I want to downlode tensorflow==2.4.3 which version of python is compatible for this because i was running requirement.txt .