avira anivirus not uninstall in my computrer
Go to below page & make step by step https://www.techsupportall.com/avira-uninstall-tool/
Watch Video & get more idea https://www.youtube.com/watch?v=ArjSwjjECPE
If you uninstall Avira Antivirus, your computer / Laptop need another one best antivirus.
I would suggest to install Comodo Free Antivirus. Get free antivirus from official website: https://antivirus.comodo.com