Install Certbot in Ubuntu with package manager

Install Python

sudo apt install python3 python3-venv libaugeas0 python3-pip -y

Install Certbot

sudo apt install python3-certbot -y

If you want to use certbot automatic for cloudfare install the following

sudo apt install python3-certbot python3-certbot-dns-cloudflare -y

If you want to use it for either nginx og apache with automation of the services install the following

sudo apt install python3-certbot python3-certbot-apache -y

Or

sudo apt install python3-certbot python3-certbot-nginx -y