Can go with turnkey service @microdotblog which just works out of box and lets you connect to tumblr, twitter, linkedin, mastodon, have a fediverse instance of your site, homepages and web pages,..phew,,,plus an intentionally hospitable community
At the next level there is WordPress. Works best with one of the themes developed by the community and a few well maintained plugins. Install them and you are off to the races. WordPress is hard to do if you want to keep your current theme.