Did you enable your cache? If you don’t have a caching plugin you might want to check out WPRocket. Caching is great for subsequent visits but you can also use their plugins to configure other settings that can help.
You may also want to check out the asset cleanup plugin and unload any scripts, plugins, or files that aren’t needed for that page. It’s an excellent plugin to strip the fat.
Many plugins and files load on all pages even if they aren’t needed. This adds bloat to the page and makes it take longer to load.
Also, there’s a company called Cloudflare which has a network of servers (CDN) all around the world. If you create a cloud flare account, your site can get loaded closer to people based on their location which can help improve performance.