You're using WordPress which is good
really? I think that Wordpress is not the best.
Just a little info Wordpress dominates the internet when it comes to content management there are hundreds of reasons why webmasters should use WordPress, it has everything you're looking for to create a great and secure website.
Roughly 43.1% of all websites on the Internet use WordPress. WordPress dominates the content management system market, with ~65.3% market share
https://themeisle.com/blog/why-you-should-use-wordpressIt's the most preferred script by celebrities like Katy Perry, Rihanna, Sylvester Stallone and others
Go here to see other popular celebrities that uses WordPress
https://colorlib.com/wp/celebrity-websites-using-wordpress/And in the crypto world, there are people who like to hack a site.
Not only in the crypto world that is sure.
There is no problem with WordPress there are tons of plugins that deal with the security of the site, you will have a hard time picking the best because all of them are good.