How to Make WordPress Site Secure from Hackers?

[HDLock]

Would like to know all possible way to make my WordPress site secure from hackers.
Are there any experts who can share their tips here?

One of my co-workers shared these ones:

Create WordPress Sites on FLATsite
Use TLS or SSL Certificates
Utilize DDOS Protection
Implement a Website Back-up

Have you tried FLATsite static wordpress site generator (https://flatsite.com/)? Is it really good solution?
So, could you share your view points on securing wordpress site from hackers?

Thanks.

[Jodi]

They have helped me to launch a number of static wordpress blogs and I'll use it for any website I ever host. I enjoy that fast, lightweight static pages which need little to know monitoring and are less vulnerable. I've even put together a list of five noticeable SEO benefits of FLATsite.com (https://flatsite.com/) static sites - really cool solution.

[Frost$]

Well, I've noticed that FLATsite.com is offering 1st month at $1 - this is cool!
If you use a static site generator like FLATsite, you can make a bigger, more secure PBN to increase the value of all the sites you develop.

[Dexterity]

Wordpress-friendly plans are available from libertyvps.com and simplenet.io.
They are the best in it. They are probably the fastest web hosting and cheapest companies ever.