Configuring Apache web server to use Lets Encrypt wildcard SSL

Hello! I was installed and configure everythink, could you help me with add sertificate on httpd.conf Where I need add this cert in httpd.conf ? SSLCertificateFile /etc/letsencrypt/live/domen.tld/cert.pem SSLCertificateKeyFile /etc/letsencrypt/live/domen.tld/privkey.pem SSLCertificateChainFile /etc/letsencrypt/live/domen.tld/fullchain.pem So I see on browser it like self-signed ssl How can solve it.