install myql

sudo apt update
sudo apt install mysql-server
sudo systemctl start mysql.service

sudo mysql

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

mysql -u root -p

ALTER USER 'root'@'localhost' IDENTIFIED WITH auth_socket;

https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-20-04