Adding to this, since you mentioned you attempted 5-10 times in which part of the process are you stuck? Can you share the error message that you get, if you get any? That’s what @KangJL meant by “screenshot”.
I just visited your website, and it seems you have an SSL installed, but it’s a self-signed one. Self-signed SSLs only show as valid with Cloudflare, which isn’t supported with the subdomains provided by InfinityFree (such as epizy.com), so you’ll need to install an SSL from a different provider such as GoGetSSL. To ensure that your website is only available via HTTPS, you’ll need to do this afterwards: