It’s been a while and kivy is a moving target. I used the Linux instructions in the past to get it fully installed locally. I remember getting errors and having to work through them with Google but got it to run eventually. This is over a year ago now.
https://kivy.org/doc/stable/installation/installation-linux.html
Or you could use - WebControl Releases for Testing
Webcontrol is not based on Kivy
Thank you