How can I monitor the state of Apache2 in Ubuntu Server 18.04 and restart if necessary?

Question

Apache HTTP Server

Hello.
After installing certificates with Certbot, Apache2 periodically crashes.
The reason is still unknown, and for the time of clarification, I decided to make a crutch - monitor the state of Apache every minute, and if it lies, do something like
service apache2 start
manually, it works :)
how can this be done?
What is cron - I know. But I don't know how to write bash scripts.
Thanks in advance.

Answer 1

In general, I found the answer:
blog.sedicomm.com/2018/03/17/kak-ustanovit-i-nastr...
it's called - monit let's
see what happens next))

Answer 2

daemontools
https://losst.ru/avtomaticheskij-perezapusk-servis...